Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions while at rest. It is the minimum number of calories you need to keep your body functioning.
Your BMR is influenced by a number of factors, including age, weight and height. You can use our BMR calculator to estimate your BMR.
Once you know your BMR, you can use it to help you determine how many calories you need to consume each day to maintain your current weight.
If you want to lose weight, you can create a calorie deficit by consuming fewer calories than your BMR. If you want to gain weight, you can create a calorie surplus by consuming more calories than your BMR.