“There’s not a muscle group that you use in the ring that jumping rope doesn’t work; that’s why it’s such an important part of the fighter’s workout. Turning the rope and keeping it turning works your hands, wrists, forearms, and shoulders – which you use for punching. Getting up over it works every part of your legs, from your calves to your thighs – which you use to move. And the constant movement works your heart and lungs, which, of course, run everything else.” – Joe Frazier #boxing #mikety