Lose Fat, Gain Muscle!
The vast majority of young athletes I work with are often striving for muscle gains or fat loss and often both at the same time. This is not an easy task given that one requires an anabolic (growth) process, and the other a catabolic (declining) process. The first law of thermodynamics states that energy can neither be created nor destroyed. In other words, for weight gain to occur there must be excess energy left over in our diet after sufficient energy is provided to fuel our metabolism, thermogenic effect of food (digestion) and physical activity. Similarly, energy cannot just be destroyed, therefore it must be burned by the body (and not replaced through our diet) if it is to be seen as weight loss. This is an oversimplified summary of an otherwise extremely complicated physiological process.