Whether you're working on your deadlift PR, getting ready for a jog, or training for ( gasp!) your first pull-up, warm-ups are nonnegotiable. It doesn't matter your fitness level or age either, says ...

You can speed up some. If you have more than one medicine ball, you might find that you want a lighter one for some exercises and a heavier one for others. 15 more seconds. And remember ...

Back and shoulder exercises are the core of Tang’s six-week challenge—and you’ll see them show up in almost every workout. In Workout 2, expect rows and shoulder presses in supersets with hip thrusts ...