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Profactor T-2000 One simple way to increase your muscle mass is to lift lots of weight just a few times. To start, choose a muscle group. For this example, do the chest. Begin with a warm-up set using lighter weights. Do about 20 reps to warm up: use lighter weights if you cannot do 20 reps. Regarding your second set, you should select a heavier weight where you do about 6 to 8 reps. Increase the weight by 5 pounds and repeat for the third set.http://www.supplements4us.com/profactor-t-2000/