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10. Your entire focus is on lifting weights, not lowering them -- When you lift weights, the lowering movements are just as key, if not more so, than the actual lifting movements. As Yahoo explains, that's because the lowering, or eccentric, movements damage muscles more than the lifting, spurring the body to burn more caloric energy to repair your muscles. One Greek study showed that women who performed one weekly strength workout focusing on eccentric movement boosted their resting energy expenditure and fat burning.