Muscles are a fiber build out of various proteins. proteins are constructed out of thousands of amino acids. there are 20 amino acids.
To build muscle, you train and create microtears in the muscle. the body needs these amino acids to repair them.
normally we take amino acids out of meat. however, its digested slowly.
The body will not wait, and break down muscle to create new amino acids, to repair the tear.
fast digested whey protein however, prevents this, and gives the body essential amino acids, and every other amino acid needed for protein synthesis.
For these reasons, you would like to take whey when the body is catabolic state
- in the morning, when everything you ate is allready gone and it needs new energy
- after training, because of the imminent repair
also, if you gain muscle, you'll need quite some protein each day, and a shake is a very quick n easy solution
i am on a 300g protein/day diet, and i am not going to eat 1.2 kilogram of chicken per day