Earth is expected to spin faster than usual in the upcoming weeks, leading to slightly shorter days, scientists report, ...

Doing a pull-up might seem easy—you're just, ya know, pulling your body up sans equipment. That is, until you actually try to do one. This strength-training move is shockingly tough for even ...

2. Build Your Muscular Endurance. Once you can hold yourself at the top of a pull-up—chin over bar—for at least 10 seconds, it’s time to focus on lowering yourself slowly and with control.