When training to gain muscle fast its critical to get your testosterone levels up. Your body produces testosterone naturally and you can enhance that production by performing exercises that work large muscle groups. Squats, dead lifts and power cleans are the best exercises to get the juices flowing and gain muscle fast. You're gonna want to use about 80-90% of your 1 rep max for the maximum benefit.

Squats and dead lifts are mainly slow moving exercises known for developing brute strength. The power clean is a little different in that it is a more explosive type movement. Take some care if you haven't trained using power cleans previously. Because they require an explosive move they are little more risky but well worth the fast muscle gaining benefits. Click here for a video demonstrating the power clean