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Old 07-20-2011, 04:27 AM   #4 (permalink)
FitDay Member
Join Date: Mar 2010
Posts: 5

From what I understand on the subject. You do more sets of less reps at a heavier weight to build muscle mass. The muscle mass you put on from this isn't very dense. Doing less sets at a higher rep count with less weight makes your muscles more dense and stronger instead of really creating any mass. Builders alternate between both.
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