We know you’re tired of hearing it, but it works. There is science behind weight gain that proves 3,500 calories equals about one pound of fat. Then, there’s another measurement called basal metabolic rate (BMR). BMR factors in a person’s age, gender, height, and activity level to calculate the number of calories your body needs to function. For example, a 40 year old woman who’s 5’5” tall and weighs 350 pounds with little physical activity can expect her body to burn approximately 3,150 calories in a day. That means, anything she consumes beyond that will be stored as fat and result in weight gain. If she continues to eat at least 3, 150 calories a day, she will likely remain at 350 pounds. To lose weight without dieting, she will have to cut calories. 3,500 calories are one pound of fat gained or lost. So to lose a pound of fat at your same activity level, reduce your caloric intake by 500 calories per day. You should consult a physician (link to contact us) to learn the right amount of calories to consume daily.