Another method that has been around for a long time is performing as many repetitions as possible with the idea of toning your muscles. Well like a lot of uninformed ideas this concept is false. You will build stamina and endurance within a muscle through multiple repetitions but it will not shape or tone your muscles. If your goal is to build stamina without gaining muscle mass perform anywhere from 15 to 30-plus repetitions of a single exercise. http://t-rexmuscleadvice.com/primal-shred/
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