As one would expect, by the Aaptiv Fitness Program Review end of the five weeks, body weight was greater in the glucose, whole milk protein and whey fed rats than in the fasted ones. No shock there. Here is where it gets interesting. In the group getting the glucose or the whole milk protein, the increase in weight was from bodyfat, but in the whey fed group, the increase in weight was from an increase in muscle mass and a decrease in bodyfat. Only the rats getting the whey before their workout increased muscle mass and decreased their bodyfat. The researchers theorized this was due to whey's ability to rapidly deliver amino acids during exercise. Is this the next big find in sports nutrition or those simply looking to preserve muscle mass loss due to aging.

How Does Aaptiv Fitness Program Work?