Understanding Calories and Energy Balance
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Understanding Calories and Energy Balance
Grade 9 Physical Education Fueling Your Body for Life
What if food isn't the enemy, but fuel for your body?
Think about your current relationship with food Do you see calories as 'good' or 'bad'? How does this perspective affect your eating habits?
What Are Calories?
A calorie is a unit of energy Just like a car needs gas, your body needs calories to function Calories fuel everything: breathing, thinking, moving Your body burns calories even when you're sleeping!
Basal Metabolic Rate (BMR)
BMR = calories burned at rest Energy needed for basic body functions Breathing, heart beating, cell repair Think of it as your body's 'engine idling'
BMR vs TDEE: The Complete Picture
{"left":"BMR (Basal Metabolic Rate)\nCalories burned at rest\nBasic body functions only\nAbout 60-70% of total calories","right":"TDEE (Total Daily Energy Expenditure)\nBMR + Activity calories\nIncludes exercise and daily movement\nYour complete energy needs"}
Calculate Your Personal TDEE
Use devices to access online TDEE calculator Input your age, height, weight, and activity level Record your BMR and TDEE results Compare with a partner and discuss differences
Energy Balance: Surplus vs Deficit
Calorie Surplus: Eating more than you burn Often needed for muscle building and growth Calorie Deficit: Eating less than you burn Often used for fat loss goals Balance is key - avoid extremes!
Key Takeaway
Understanding your energy needs empowers you to make informed choices about food and activity - not to restrict, but to fuel your body properly for your goals and lifestyle.