Personal Health And Wellness¶
Summary¶
Students explore why adequate sleep and rest matter for growth and learning, and how different physical activities support different fitness components. The chapter also covers recognizing and responding to allergic reactions, understanding chronic conditions and illness symptoms, knowing when to seek help, and how personal behaviors affect long-term health.
Concepts Covered¶
- Sleep And Rest Needs
- Sleep Supports Growth And Learning
- Fitness Component
- Physical Activities By Fitness Component
- Allergic Reaction
- Allergic Reaction Signs
- Responding To Allergic Reactions
- Chronic Condition
- Common Illness Symptoms
- Knowing When To Seek Help
- Personal Behaviors And Long-Term Health
Prerequisites¶
Builds on Health and Trusted Adult from Chapter 1: Foundations And Trusted Adults.
Taking Care Of Your Whole Self
Welcome back, friend! This chapter is all about your body and how to take care of it — from getting enough sleep, to moving in ways that keep you strong, to knowing what to do if something feels wrong. Healthy choices, happy you!
Sleep And Rest Needs¶
Your body is not "off" when you're asleep — it's busy working. Sleep and rest needs describes the amount of sleep and downtime a person's body requires to function well, which changes depending on age. Most 10- and 11-year-olds need about 9 to 12 hours of sleep every night, more than most adults need. Rest also includes shorter daytime breaks — like sitting quietly after a long recess — that let your brain and muscles recover between bursts of activity.
Several habits make it easier to get the sleep your body needs:
- Going to bed and waking up at roughly the same time every day, even on weekends.
- Turning off screens (phones, tablets, TV) at least 30-60 minutes before bed, since bright screens can trick your brain into feeling awake.
- Keeping your bedroom cool, dark, and quiet.
- Avoiding caffeine (found in some sodas, energy drinks, and chocolate) in the afternoon and evening.
Helpful Tip
A calm bedtime routine — like reading, stretching, or quiet music — signals to your brain that it's time to slow down. Doing the same steps in the same order each night helps your body learn when sleep is coming.
Sleep Supports Growth And Learning¶
Sleep isn't just about feeling less tired the next day. Sleep supports growth and learning in direct, physical ways. While you sleep, your body releases growth hormone, which helps bones and muscles develop. Your brain also uses sleep time to sort through what you learned that day, strengthening memories and skills — like moving files from a messy desk into organized folders.
When someone doesn't get enough sleep, the effects show up quickly:
| Area Affected | What Happens With Too Little Sleep |
|---|---|
| Learning and memory | Harder to focus, remember facts, or solve problems |
| Mood | More irritable, more likely to overreact to small frustrations |
| Physical growth | Less growth hormone released, slower recovery from activity |
| Immune system | Body has a harder time fighting off germs and getting better when sick |
Notice that sleep connects to nearly every other topic in this chapter — including how well your immune system can respond to illness, which you'll read about later.
Diagram: Sleep Debt Tracker¶
Sleep Debt Tracker MicroSim
Type: microsim
sim-id: sleep-debt-tracker
Library: p5.js
Status: Specified
Bloom Taxonomy: Understand (L2) Bloom Taxonomy Verb: explain, summarize, interpret
Learning objective: Students explain why adequate sleep matters for growth and learning by tracking a week of sleep hours against the 9-12 hour recommendation and observing the effects for each night.
Canvas layout: Left (450px) 7-day bar chart of hours slept; right (200px) sliders and effects panel.
Visual elements: Seven bars (Mon-Sun); shaded reference band for the healthy 9-12 hour range; effects panel with icons for learning, mood, growth, immune system.
Interactive controls: Seven sliders (4-12 hours each, one per day); running "sleep debt" display; "Reset to Healthy Week" button (sets all sliders to 10).
Default parameters: Mon 7, Tue 6, Wed 9, Thu 7, Fri 10, Sat 11, Sun 8.
Behavior: Bars below the healthy band dim and trigger notes like "Less growth hormone released"; bars in/above the band brighten and show notes like "Memories get organized well." Sleep debt total updates live as sliders move.
Instructional Rationale: Understand-level objective, so the design shows concrete per-night data next to plain-language effects rather than animation, letting students connect a number to a real consequence.
Implementation notes: p5.js; store the healthy range as a constant; recompute bar color and effects text on slider change.
Diagram: Sleep: The Overnight Repair Shop¶
Sleep: The Overnight Repair Shop Interactive Poster
Type: infographic
poster-id: sleep-overnight-repair-shop
Library: p5.js
Status: Published
Ten workshop stations show how sleep supports memory, growth, emotion, immunity, energy, and attention.
Use Explore mode to select a numbered marker and learn more. Use Quiz mode to practice finding each idea.
Key Idea
Sleep is when your body grows and your brain organizes what you learned. Skipping sleep doesn't just make you tired — it slows down growth, learning, mood, and even how well you fight off germs.
Fitness Component¶
Not all exercise trains your body the same way. A fitness component is one of the specific categories of physical fitness that contribute to overall health. This chapter focuses on four components that are easy to notice and practice:
- Cardiovascular endurance — how well your heart and lungs supply oxygen to your body during sustained activity, like running or swimming.
- Muscular strength — how much force your muscles can produce, like lifting or pushing something heavy.
- Flexibility — how far your joints and muscles can stretch and move, like reaching or bending.
- Balance and coordination — how well your body controls movement and stays steady, like walking on a beam or catching a ball.
Understanding these categories matters because a well-rounded fitness routine touches all four — someone who only ever does one type of activity (say, only stretching) is missing the benefits the other components provide.
Physical Activities By Fitness Component¶
Once you know the four fitness components, you can match specific activities to the component they mainly build. Physical activities by fitness component means recognizing which component a given activity primarily strengthens — and being able to name at least one activity for each one.
| Fitness Component | Example Activities |
|---|---|
| Cardiovascular endurance | Running, swimming laps, biking, jump rope |
| Muscular strength | Push-ups, climbing, carrying groceries, resistance bands |
| Flexibility | Stretching, yoga, gymnastics, reaching drills |
| Balance and coordination | Balance-beam walking, dancing, juggling, catching a ball |
Many activities build more than one component at once — swimming builds cardiovascular endurance and muscular strength; dance builds balance/coordination and flexibility. The goal isn't picking one "correct" activity; it's noticing that variety across the week covers more ground than repeating the same motion every day.
Diagram: Fitness Component Activity Sorter¶
Fitness Component Activity Sorter MicroSim
Type: microsim
sim-id: fitness-component-activity-sorter
Library: p5.js
Status: Specified
Bloom Taxonomy: Analyze (L4) Bloom Taxonomy Verb: classify, distinguish, organize
Learning objective: Students classify physical activities into the fitness component (cardiovascular endurance, muscular strength, flexibility, balance and coordination) each one primarily builds.
Canvas layout: Left (450px) four labeled bins with a deck of activity cards; right (200px) score display and feedback panel.
Visual elements: Four bins with icons (heart, dumbbell, stretching figure, balance beam); 12 activity cards (running, push-ups, yoga, balance-beam walk, swimming, climbing, dancing, jump rope, stretching, juggling, biking, catching a ball).
Interactive controls: Drag each card into its bin; "Check My Sorting" button reveals correct/incorrect placements; "Shuffle New Round" resets with cards reordered.
Default parameters: All 12 cards start unsorted in a scrambled row.
Behavior: Correct placements highlight green, incorrect orange with a one-line hint (e.g., "Push-ups build muscular strength, not flexibility"). Multi-component cards like swimming accept either correct bin.
Instructional Rationale: Analyze-level objective requiring classification, so the pattern is an active sorting task with clear category feedback rather than passive viewing.
Implementation notes: p5.js; store activities as objects with name, icon, and one or two correct component tags; drag detection via mouseIsPressed and bounding boxes.
Diagram: The Fitness Component Field Day¶
The Fitness Component Field Day Interactive Poster
Type: infographic
poster-id: fitness-component-field-day
Library: p5.js
Status: Published
Four inclusive field-day stations connect activities with endurance, strength, flexibility, and balance and coordination.
Use Explore mode to select a section and learn more. Use Quiz Me mode to practice finding each idea.
Allergic Reaction¶
Sometimes a person's immune system — the body's defense against germs — mistakenly treats something harmless as a threat. An allergic reaction is the body's overreaction to a substance (an allergen) that is normally harmless to most people, such as peanuts, tree nuts, shellfish, bee stings, certain medicines, or latex. When the immune system detects the allergen, it releases chemicals that cause the reaction's symptoms.
Allergic reactions range widely in severity:
- Mild reactions might involve a bit of itching, a few hives, or a stuffy nose.
- Severe reactions, called anaphylaxis, can affect breathing and blood pressure and are a medical emergency.
Knowing that allergic reactions exist on a spectrum — and that they can happen to classmates, family members, or yourself — is the first step toward recognizing one and responding correctly.
Allergic Reaction Signs¶
Recognizing an allergic reaction quickly can make a real difference in how it's handled. Allergic reaction signs are the physical symptoms that appear during an allergic reaction — on the skin, in the airway, in the digestive system, or throughout the whole body.
Common signs include:
- Skin: hives (raised, itchy red bumps), widespread redness, or swelling — especially around the face, lips, tongue, or eyes.
- Breathing: coughing, wheezing, throat tightness, or difficulty breathing.
- Digestive: stomach cramps, nausea, or vomiting.
- Whole body: dizziness, a sudden drop in energy, or a feeling that "something is very wrong."
The most urgent warning signs — swelling of the face or throat, real trouble breathing, or fainting — signal anaphylaxis and require calling for emergency help immediately. Not every allergic reaction looks the same: hives and an itchy mouth are common mild signs, while facial swelling and breathing trouble are emergency signs that mean act fast.
Diagram: Allergic Reaction Signs Explorer¶
Allergic Reaction Signs Explorer Infographic
Type: infographic
sim-id: allergic-reaction-signs-explorer
Library: p5.js
Status: Specified
Bloom Taxonomy: Remember (L1) Bloom Taxonomy Verb: identify, recognize, list
Learning objective: Students identify the signs of an allergic reaction across the skin, breathing, digestive system, and whole body, and recognize which signs signal an emergency.
Canvas layout: Full width (650px) illustrated figure with 8 clickable hotspots; bottom strip (100px) infobox showing sign and severity.
Visual elements: Flat-style illustrated person with hotspots at face/lips, skin (arm), throat, chest, stomach, whole-body icon (dizziness), plus a "Mild"/"Emergency" legend. Hotspots color-coded yellow (mild) or red (emergency).
Interactive controls: Click any hotspot to reveal sign/description/severity; "Show All Signs" button; "Reset" button.
Default parameters: No hotspot selected on load.
Behavior: Face/lips shows "Swelling of face, lips, or tongue — Emergency"; skin shows "Hives or redness — Mild to moderate"; throat shows "Throat tightness — Emergency"; chest shows "Coughing, wheezing, trouble breathing — Emergency"; stomach shows "Cramps, nausea, vomiting — Mild to moderate"; whole-body icon shows "Dizziness or weakness — Emergency".
Instructional Rationale: Remember-level objective, so click-to-reveal labeling builds a clear factual list rather than animation.
Implementation notes: p5.js; hotspot objects (x, y, radius, sign, severity, description) colored by severity; infobox renders in bottom strip on click.
Responding To Allergic Reactions¶
Recognizing signs is only useful if paired with knowing what to do next. Responding to allergic reactions means taking the correct action based on how severe the reaction appears to be.
For a mild reaction (a few hives, mild itching, no breathing trouble): tell a trusted adult right away even if it seems minor, help the person avoid more contact with the allergen, and watch closely since mild symptoms can turn serious quickly.
For a severe reaction (swelling of the face/throat, trouble breathing, dizziness, or fainting): call for emergency help immediately (911 or the local emergency number) or get an adult to do so instantly; if a prescribed epinephrine auto-injector is available and a trained adult is present, it may be used right away following the emergency plan; then stay with the person, keep them calm, and do not leave them alone.
The single most important rule in any allergic reaction, mild or severe, is this: never wait and see if it's "probably nothing." Getting a trusted adult involved immediately is always the right first move.
Common Mistake
Don't wait to see if symptoms get worse before telling an adult. Reactions can escalate in minutes. Speak up the moment you notice a sign — it is never an overreaction to ask for help.
Diagram: Allergic Reaction Response Workflow¶
Allergic Reaction Response Workflow
Type: workflow
sim-id: allergic-reaction-response-workflow
Library: Mermaid
Status: Specified
Bloom Taxonomy: Apply (L3) Bloom Taxonomy Verb: demonstrate, use, practice
Learning objective: Students apply the correct sequence of actions for responding to a mild versus a severe allergic reaction.
Purpose: Show a clear, branching decision path for responding to an allergic reaction based on severity, every node clickable for an explanation.
Visual style: Flowchart with a decision diamond and process rectangles.
Steps: 1. Start: "You notice a possible allergic reaction" — Click: "Signs can include hives, swelling, coughing, or stomach upset." 2. Decision: "Are there emergency signs (face/throat swelling, trouble breathing, dizziness/fainting)?" — Click: "Emergency signs mean this could be anaphylaxis, a life-threatening reaction." 3a. Process (if yes): "Call 911 or get an adult to call immediately" — Click: "Never wait to see if severe symptoms improve on their own." 3b. Process (if yes): "Use epinephrine auto-injector if prescribed and an adult is trained" — Click: "Only a person trained on that student's emergency plan should give this." 4. Process (if no, mild): "Tell a trusted adult right away" — Click: "Even mild signs should be reported immediately, since they can escalate." 5. Process: "Avoid further contact with the allergen and watch closely" — Click: "Move away from the food or substance and keep observing." 6. End: "Stay with the person and do not leave them alone" — Click: "Staying nearby means help arrives faster if things change."
Color coding: Red for emergency-path steps, yellow for the decision diamond, blue for mild-path steps, gray for the ending step.
Implementation: Mermaid flowchart with a click directive on every node opening an infobox with that node's explanation text. Tone stays calm and clear, avoiding alarmism while conveying urgency for emergency signs.
Diagram: Allergy Action: Notice, Protect, Get Help¶
Allergy Action: Notice, Protect, Get Help Interactive Poster
Type: infographic
poster-id: allergy-action-notice-protect-get-help
Library: p5.js
Status: Published
Four clear panels teach allergy signs, exposure reduction, adult help, and emergency recognition.
Use Explore mode to select a section and learn more. Use Quiz Me mode to practice finding each idea.
Chronic Condition¶
Not every health topic is about something that happens suddenly. A chronic condition is a health condition that lasts a long time — often for someone's whole life — and needs ongoing management rather than a one-time cure. Common examples include asthma, type 1 diabetes, allergies, and epilepsy. Millions of kids live full, active lives with a chronic condition.
Living with a chronic condition is a normal part of some people's lives, not something scary, shameful, or "wrong." It simply means that person's body needs a specific plan to stay healthy — like a student with asthma keeping an inhaler nearby, or a student with diabetes checking blood sugar on a schedule. With the right plan, most chronic conditions don't stop someone from playing sports, going to sleepovers, or doing anything else they enjoy.
- A chronic condition is managed, not cured — that's the key difference from a common illness like a cold.
- People with chronic conditions are experts on their own bodies and often know exactly what they need.
- Treating a classmate's chronic condition matter-of-factly, the same way you'd treat someone wearing glasses, helps them feel normal and included. A chronic condition isn't scary — it's just something a person manages every day, and asking a classmate what helps them, then listening, is always a kind first step.
Common Illness Symptoms¶
Unlike a chronic condition, most illnesses are short-term. Common illness symptoms are the signals your body gives when fighting off a cold, the flu, a stomach bug, or another temporary illness. Recognizing these symptoms helps you know when to rest, tell an adult, or see a doctor.
| Symptom | What It Might Mean |
|---|---|
| Fever (high body temperature) | Body is fighting an infection |
| Sore throat or cough | Common with colds and flu |
| Runny or stuffy nose | Common with colds |
| Stomachache, nausea, or vomiting | Possible stomach bug or foodborne illness |
| Unusual tiredness or body aches | Body using energy to fight illness |
Notice that stomach upset connects back to the foodborne illness concept from earlier in this course, since unsafe food handling is one common cause of sudden stomach symptoms.
Diagram: Symptom Timeline: Cold vs. Stomach Bug¶
Symptom Timeline: Cold vs. Stomach Bug
Type: timeline
sim-id: symptom-timeline-cold-vs-stomach-bug
Library: vis-timeline
Status: Specified
Bloom Taxonomy: Understand (L2) Bloom Taxonomy Verb: compare, contrast, interpret
Learning objective: Students compare how symptoms typically progress over several days for a common cold versus a stomach bug, to better recognize what their body might be experiencing.
Time period covered: Day 1 through Day 5 of illness for two example conditions.
Orientation: Horizontal, two parallel rows (Cold, Stomach Bug).
Events (Cold row): Day 1 scratchy throat/mild tiredness; Day 2 runny nose, congestion begins; Day 3 cough develops; Day 4 symptoms peak, low fever possible; Day 5 slowly improves.
Events (Stomach Bug row): Day 1 sudden stomachache/nausea; Day 2 vomiting or diarrhea possible, low energy; Day 3 symptoms peak then ease; Day 4 appetite returns; Day 5 mostly back to normal.
Visual style: Two color-coded horizontal rows with circular event markers (blue = Cold, orange = Stomach Bug).
Interactive features: Click or hover any event marker for a short description and tip (e.g., "Day 2 Stomach Bug: Rest and small sips of water are important now"); zoom and pan across the 5-day window.
Implementation: vis-timeline library with two grouped rows and a dataset of 10 events, each with a tooltip/click description.
Knowing When To Seek Help¶
Most illness symptoms simply need rest, fluids, and time. But some symptoms signal it's time to involve a trusted adult or medical professional right away. Knowing when to seek help means recognizing the difference between "this needs rest" and "this needs a doctor or emergency care now."
Signs that mean you should tell a trusted adult and possibly see a doctor soon:
- A fever that is high or lasts more than a day or two.
- Symptoms that keep getting worse instead of better.
- Pain that is severe or in an unusual place.
Signs that mean emergency help is needed right away:
- Trouble breathing, chest pain, or bluish lips.
- Severe allergic reaction signs (covered earlier in this chapter).
- A head injury with confusion, repeated vomiting, or loss of consciousness.
- Any time a chronic condition (like asthma or diabetes) suddenly feels out of control.
In every case — mild, serious, or an emergency — the first step is the same: tell a trusted adult. You are never "dramatic" or "annoying" for speaking up about how your body feels. Adults would much rather hear about a symptom that turns out to be minor than miss one that needed quick action.
It's Always Okay To Ask
If you're not sure whether something is a big deal, that uncertainty itself is a good reason to tell a trusted adult. You don't have to diagnose yourself — you just have to speak up.
Diagram: When To Seek Help Decision Sorter¶
When To Seek Help Decision Sorter MicroSim
Type: microsim
sim-id: when-to-seek-help-decision-sorter
Library: p5.js
Status: Specified
Bloom Taxonomy: Evaluate (L5) Bloom Taxonomy Verb: judge, assess, prioritize
Learning objective: Students evaluate a set of symptom scenarios and judge whether each calls for resting at home, telling an adult and seeing a doctor soon, or seeking emergency help immediately.
Canvas layout: Left (450px) scenario card; right (200px) three sorting buttons ("Rest At Home", "Tell An Adult Soon", "Emergency — Act Now") and a feedback panel.
Visual elements: Scenario card with plain-language description; three response buttons; feedback panel with calm, reassuring reasoning after each choice.
Interactive controls: Click a button to answer; "Why?" button reveals reasoning; "Next Scenario" cycles through a bank of 9 scenarios covering mild illness, worsening illness, chronic-condition flare-ups, and emergencies.
Default parameters: Starts on "You have a mild runny nose and feel a little tired."
Behavior: The runny-nose scenario sorted as "Rest At Home" reveals "Mild cold symptoms usually just need rest, fluids, and time — but still mention it to a trusted adult." A three-day worsening fever sorted as "Tell An Adult Soon" explains why prolonged symptoms need attention. A friend with asthma wheezing and unable to catch their breath sorted as "Emergency — Act Now" explains why a chronic condition suddenly out of control is an emergency.
Instructional Rationale: Evaluate-level objective requiring judgment and prioritization, so the pattern is a judgment task with reasoning-based feedback rather than a timed game.
Implementation notes: p5.js; scenarios stored as objects with description, correct category, and explanation string; tone stays calm and non-alarmist.
Personal Behaviors And Long-Term Health¶
Everything in this chapter connects to one bigger idea: the choices you make repeatedly, day after day, add up over years to shape your long-term health. Personal behaviors and long-term health describes how everyday habits — not single big decisions — determine how healthy a person is likely to be far into the future.
Some of the personal behaviors that matter most over time include:
- Sleep habits — consistently getting enough rest supports growth, learning, and a strong immune system.
- Physical activity — regularly practicing all four fitness components keeps the heart, muscles, joints, and balance systems strong.
- Recognizing and responding to symptoms — noticing allergic reaction signs or illness symptoms early, and telling a trusted adult, prevents small problems from becoming bigger ones.
- Managing chronic conditions consistently — following a management plan for a condition like asthma or diabetes, rather than skipping it, keeps that condition well controlled.
- Hygiene and safe food handling — habits like handwashing and safe food practices reduce the chance of illness in the first place.
None of these behaviors guarantee perfect health — bodies are complicated, and some things (like having a chronic condition at all) aren't a choice. But practicing them consistently gives your body the best possible support, and taking ownership of these habits now builds patterns that carry into adulthood.
Diagram: Daily Habits and Long-Term Health Concept Map¶
Daily Habits and Long-Term Health Concept Map
Type: graph-model
sim-id: daily-habits-long-term-health-map
Library: vis-network
Status: Specified
Bloom Taxonomy: Analyze (L4) Bloom Taxonomy Verb: examine, organize, distinguish
Learning objective: Students analyze how five categories of everyday personal behavior connect to and build toward long-term health.
Purpose: Show five everyday behavior categories feeding into the central concept of long-term health, letting students explore each connection.
Node types: Central node "Long-Term Health" (large green circle, center); five supporting nodes (medium blue circles): "Sleep Habits", "Physical Activity", "Recognizing Symptoms Early", "Managing Chronic Conditions", "Hygiene and Safe Food Handling".
Edge types: Solid arrows from each supporting node pointing inward to "Long-Term Health", labeled "supports".
Layout: Radial/hub layout, central node fixed in the middle, five supporting nodes spaced evenly around it.
Interactive features: Hover any node for a one-sentence definition tooltip; click a supporting node to highlight its edge and show a daily-life example in a side panel; click the center node for a summary of all five behaviors; zoom with mouse wheel, pan by dragging background.
Visual styling: Central node green and larger; supporting nodes blue; "supports" edges gray with arrowheads pointing inward.
Legend: Green = combined outcome; Blue = contributing behavior category; Gray arrow = "supports" relationship.
Implementation: vis-network library with a fixed dataset (6 nodes, 5 edges) and click/hover handlers tied to a definitions object. Canvas 650x450px, responsive to container width.
Bringing It All Together¶
This chapter covered how your everyday choices and awareness support your whole body. Sleep and rest needs and sleep supports growth and learning showed that rest is active work your body does to grow and organize learning. Fitness components and physical activities by fitness component showed that a well-rounded active life covers cardiovascular endurance, muscular strength, flexibility, and balance and coordination.
You also learned to recognize an allergic reaction and its signs, and how to respond, whether mild or severe — always by telling a trusted adult right away. Finally, you learned that a chronic condition is a normal, manageable part of some people's lives, how to recognize common illness symptoms, and — most importantly — when to seek help. All of it connects to one core truth: personal behaviors shape long-term health, one everyday choice at a time.
- Sleep and rest needs: 9-12 hours nightly for your age group, plus daytime rest
- Sleep supports growth and learning: growth hormone release and memory organization happen during sleep
- Fitness component: cardiovascular endurance, muscular strength, flexibility, balance and coordination
- Physical activities by fitness component: matching real activities to the component they train
- Allergic reaction: the immune system overreacting to a normally harmless substance
- Allergic reaction signs: skin, breathing, digestive, and whole-body symptoms, mild to emergency
- Responding to allergic reactions: tell an adult immediately; call emergency help for severe signs
- Chronic condition: a long-lasting, manageable health condition, not something scary or shameful
- Common illness symptoms: fever, cough, sore throat, stomach upset, and fatigue
- Knowing when to seek help: rest at home, tell an adult soon, or seek emergency help — always speak up
- Personal behaviors and long-term health: daily habits in sleep, activity, symptom awareness, condition management, and hygiene add up over time
Chapter Complete!
Fantastic work, friend! You now understand how sleep, movement, allergy awareness, and knowing when to ask for help all work together to build a healthy life. Healthy choices, happy you!
Quick Check — Click to expand
Question: Name two fitness components and one activity that builds each, and explain the very first step you should take whenever you notice a possible allergic reaction or a symptom you're unsure about.
Answer: Example answer — cardiovascular endurance is built by running or swimming, and muscular strength is built by push-ups or climbing. In every case — a possible allergic reaction or an uncertain symptom — the first step is always to tell a trusted adult right away.