Achieving a pull-up is a significant fitness milestone for many people.First one, then maybe five, 10 or more: "The ability to do pull-ups is, in my book, an impressive sign of fitness and not a given ...

Similar to jumping rope or doing box jumps, you’ll get a leg and butt workout while shredding through calories. A jack of all trades, you can use vertical mountain climbers as a pre-training warmup, ...