In fact one pound of muscle is about 72% water and contains about 100 grams of protein. This being the case, shouldn't the emphases be on consuming more water to increase muscle size? This also is overly simplistic.
They can actually make your chicken too mushy after two hours. This is because the enzymes break up the muscle fibers. If you add any of the following ingredients to your marinade you will want to make sure that you only marinate the chicken for 30 minutes to 1 hour: fresh pineapples, fresh melons, figs, and papaya. In some countries, cooks wrap their chicken in papaya leaves to tenderize them.
Prepare grill. Remove chicken from bag, reserving marinade. Place reserved marinade in a small saucepan; cook over medium heat 3 minutes. Place chicken on grill coated with cooking spray; grill 30 minutes or until chicken is done, turning and basting occasionally with reserved marinade.