BODY SYSTEMS & PERFORMANCE
Which system brings oxygen into your body so your muscles can use it?
Respiratory system
What are the 3 macronutrients?
Carbs, protein, fats
Which nutrient helps build strong bones?
Calcium
Why does your body sweat?
To cool down
An athlete feels tired very quickly during a game and is breathing hard. This usually means their muscles are not getting enough
Oxygen
Which body system pumps blood to deliver oxygen and nutrients?
Circulatory (cardiovascular) system
What macronutrient is the body’s main source of quick energy?
CARBOHYDRATES
What vitamin helps turn food into usable energy?
B Vitamins
What is sweat mostly made of?
Water + electrolytes (salt)
An athlete has strong energy but keeps getting injured easily. This likely means they are missing nutrients that help with ______.
Bones (or bone strength / calcium + Vitamin D)
Which two systems work together to deliver oxygen from the air to your muscles?
Respiratory + circulatory systems
Which macronutrient helps repair muscles?
PROTEIN
What two nutrients help with healing and recovery?
Vitamin C and Zinc
What are electrolytes used for in the body?
Muscle signals / fluid balance
An athlete eats enough food but still feels low energy. This suggests their body is not turning food into energy efficiently. What type of nutrients might be missing?
B Vitamins
When you sweat and lose water, which system has to work harder to move blood through your body?
Circulatory system
Which macronutrient is stored as glycogen (sugar)?
Carbohydrates
What molecule gives your cells energy to move?
ATP
Why can dehydration cause cramps?
Loss of electrolytes disrupts muscle signals
An athlete sweats a lot and then starts cramping near the end of a game. What did their body lose that caused the problem?
Electrolytes (and water is acceptable, but electrolytes is key)
Why is hydration important for ALL body systems during movement?
anything similar to this: Keeps blood flowing, supports oxygen delivery, prevents overheating, supports muscle function
Fats take longer to digest than carbohydrates. Why might eating a high-fat meal right before intense exercise make it harder to perform?
Because it slows digestion, so energy isn’t available quickly and it may cause discomfort.
What happens if your body can’t produce enough ATP?
Low energy / fatigue / poor performance
Why is thirst not a good early indicator of hydration?
You’re already dehydrated when thirsty
An athlete has cuts and soreness that take a long time to heal. Based on this, which nutrients are they most likely missing?
Vitamin C and Zinc