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This is the one type of exercise that will help you build muscle fastest, according to YouTube fitness stars The Lean Machines

This is the one type of exercise that will help you build muscle fastest, according to YouTube fitness stars The Lean Machines

Business Insider - Tom Murray

We've all seen those guys in the gym who hunch over an EZ bar and curl their biceps to destruction before studiously analysing themselves in the mirror. And while it can be tempting to isolate the muscle groups you're most self-conscious about, it's by working as many muscles at once that will see …

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