Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.

Recommended daily calorie intake varies from person to person, but there are guidelines for calorie requirements you can use as a starting point.

BMR is the amount of calories per day your body burns, regardless of exercise. It changes with age, weight, height, gender, diet and exercise habits.

Your body's caloric usage is unique to your lifestyle and your individual metabolism. People's energy needs vary greatly, even among those who share in similar physical activities.