An excellent method of ensuring you maximize your workouts is to keep workouts at less than an hour long.XCell 180 Learn to find your limit, but do not stop an exercise until you have used all your resources. Once your are more able to recognize the limits of your muscles, try to work them to exhaustion. You can then begin using heavier weights and doing less repetitions to increase muscle size.XCell 180 Try creating an illusion that you are bigger than you actually are. Concentrate on training your upper back, chest and shoulders to get this effect.