

Now, it generally takes roughly 3,500 calories to either gain or burn one pound. Then your BMR is factored into your total daily energy expenditure (TDEE) which gives us a good idea of how many calories you need to eat to be in an energy surplus (eating more calories than your body burns) which is necessary for weight gain. Your basal metabolic rate (BMR) which is essentially your metabolism is determined by the number of calories it takes to fuel the body’s most basic functions at rest like blood circulation, temperature regulation, etc.
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Now, there can be a few different reasons for this but to keep it simple, a fast metabolism, small appetite, and not eating enough are the most common.Īlthough, certain health conditions can also be a cause but in this case, we recommend following the guidance of a medical professional rather than trying to self-treat.īut back to the main causes, a fast metabolism simply means you burn through calories from food at a faster rate than someone with a slower metabolism.


Gaining solid weight can be rather difficult for some people whether it be in the form of fat or muscle.
