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When a rope, cable or belt runs along the groove, objects can be moved and lifted with far less effort. It’s easier when two people share the lifting of heavy objects and pulleys work in the ...

What lifting heavy weights can definitely do, though, is transform your body composition so that your body fat goes down and your lean muscle mass increases in a way that makes you a lot stronger.

Men who regularly lift heavy objects at work have higher sperm counts, according to a new study from researchers at Brigham and Women’s Hospital. The Boston scientists found that occupational ...