If you’re working hard in the gym, the last thing you want to do is sabotage yourself. That’s why you do a great job drinking watereating protein, and lifting heavy weights—those are the things you know will help you pack on a ton of muscle. But don’t commit muscle-building suicide by doing something you think is good, but really isn’t.

Here are six tips that seem good, but actually pull a ripcord on your progress. 

Biceps Curls

5 Bad Habits That Are Holding You Back

Eliminate these habits that aren't doing you any good in the fitness department.

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