This liquid (mixed with 300 - 400 ml water) and easy to digest post-workout snack is the first step to fast recovery after heavy training sessions. (bodybuilding-wizard.com)
It's true that some people feel like they've over-trained when they have only severely fatigued their muscles, which is kind of the point of a heavy workout, but what about the muscle loss caused by long periods of heavy training sessions with little time for recovery in between? (fitnessandpower.com)
As you already know, intense and heavy training sessions are the foundation of muscle growth, but the same can't occur without supplying the muscles with adequate amounts of nutrients essential to anabolism. (fitnessandpower.com)