yeah of course it rebuilds the muscle you use during the workout
just try and get 1g of protein per pound of weight of your body even on non workout days.
you should have a protein shake or recovery meal after your workout
theres no reason to be spend 40-50 dollars on protein each week most come in a 5-6 pound bottle and have enough servings for a month, maybe even more depending on how much your intake is. 100% whey taste good (choc) if your worried about taste. Mix with milk or water.
