Science-backed guides to help you understand the numbers behind your fitness goals.
Your Total Daily Energy Expenditure determines how many calories you burn per day. Learn the Mifflin-St Jeor and Harris-Benedict formulas, activity multipliers, and how to use TDEE for weight loss or muscle gain.
Read article →BMI is simple but misleading for many people. Body fat percentage gives a more accurate picture of health. Here is when each metric is useful and when it fails.
Read article →Counting macros beats counting calories for body composition goals. Learn how to calculate your ideal protein, carb, and fat ratios for cutting, bulking, or maintenance.
Read article →