Eating some protein in the few hours before exercise Can help you maintain or even increase your muscle size. That’s important for anyone who wants to improve health, body composition, or performance.
Can reduce markers of muscle damage (myoglobin, creatine kinase, and myofibrillar protein degradation). Or at least prevent them from getting worse. (Carbohydrates or a placebo eaten before exercise don’t seem to do the same thing.) The less damage to your muscles, the faster you recover, and the better you adapt to your exercise over the long term.
Floods your bloodstream with amino acids just when your body needs them most. This boosts your muscle-building capabilities. So not only are you preventing damage, you’re increasing muscle size.
Before you rush off to mix a protein shake: While protein before a workout is a great idea, speed of digestion doesn’t seem to matter much. So any protein source, eaten within a few hours of the workout session, will do the trick.