Bio Thrive X Sometimes called the "negatives", this is the lowering movement of the exercise. For pull ups, this is when you have pulled yourself up and your chin is above the bar and you are descending back to starting position where your arms are hanging straight.Want to know how to get slim quicker? Slowing down the eccentric movement of an exercise has been shown to increase your metabolic rate and also cause greater micro tears in your muscle fibers. This inevitably results in more calories burnt and your muscles coming back even stronger than before. 

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