I believe it. I had a roommate in college who was freaking ripped who drank chocolate milk religiously after he came back from the gym. You get an all-in-one - fast carbs to fill up your tank, protein to rebuild muscle, and plenty of leucine, the amino acid responsible for new muscle synthesis. Probably best of all - now no one needs an excuse to drink chocolate milk
1) eat real food - more vegetables, moderate meat, moderate fruits, less grains, less sugar, less vegetable oils.
2) exercise - moderate intensity cardio, sprinting, heavy lifting, dedicated stretching and mobility.
3) live - relax, de-stress, meditate.
Disclaimer: I'm not professionally qualified to make any formal recommendations. I've just done my homework and I'm my own guinea pig. All of my data, unless otherwise cited, comes from a sample size of n=1 (me).