Originally Posted by aka123

Although for regular gym guy, the diet is not that important; especially if you already eat healthy. Most get already enough protein and food in general. Although not that many get it from healthy diet.

You need most protein if you exercise every day and kinda break you muscles. As your body needs big amounts of protein just to fix your muscles. Taking more easy, you need "extra" protein mostly just to grow muscles. Although there is of course some repairing always, even if you don't exercise.

The limit really comes your genes/qualities by birth, unless you take steroids and such. But of course you have to exercise to get to your limit.