First, is this healthy? Is this a good way
to get the most out of
workouts, and
to gain some weight without getting fat. If so, when should he have the shakes? Also, how long should he have them for? Should he take them every time he works out? After a few months, if he stops having the shakes, will the results last without continuing to have them? Separately, will his body rely on them in the future to build muscles?
Lastly, is one powder better than another?