Why do certain diets work for some people? Why do some people go on the same diet and not lose weight, while others who do not even diet lose weight?
All the food we consume each day serves as a source of energy for the body to meet its needs. The body's basic survival activities such as breathing and pumping blood, consume energy as well as exhaustive activities such as running and working out. Even if the amount of energy used for these activities differ, they all still consume a certain amount of energy.
Different metabolic activities take place in every person, hence, every individuals body consumes different amounts of energy per day. Two people consuming the same amount of calories may achieve different results regarding weight loss, muscle development or even only weight maintenance.