The thermodynamics are straightforward but the mechanisms for energy expenditure aren't. The body is a dynamic system. It responds to the stresses placed on i

The thermodynamics are straightforward but the mechanisms for energy expenditure aren't. The body is a dynamic system. It responds to the stresses placed on it and adapts. Remove calorie inputs from the system and it tries to compensate by reducing the calorie expenditure. Low-carb diets work because they control insulin levels. If you can control/avoid the insulin spikes that regulate the absorption/storage of blood glucose, you can modulate your adipose tissue creation/consumption. Weightlifters/bodybuilders have known this for a long time. If you're looking for answers and evidence, take a good look at the population that's been experimenting and learning how to effectively build muscle mass and avoid excessive body fat.