With post-workout nutrition, timing is everything. If you want major mass gains, you need to take advantage of the slimbut valuablewindow of opportunity immediately after workouts. Because your muscles grow while they are recovering from the workout, and not during the workout, you need to feed them with a recovery supplement specifically designed to support muscular mass production. With Mass Factor that is exactly what you get Here is why...Mass Factor has been designed to inject a burst of growth-stimulating protein and carbs into your muscles after consumption to feed the growth frenzy of the first stage. Then, the next wave of slower-absorbing protein gets pumped into your muscles to support the second-stage growth spurt.This two-stage slower-absorbing activating system is made possible through the use of fast and slow acting proteins and carbs. A blend of whey and casein provides the perfect protein combination, because research shows that whey protein is absorbed very rapidly in