The time you take to train doesn’t matter—the intensity does. Have only 20 minutes? No problem, as long as you’re ready for the roughest 20 minutes of your life.

This workout uses some tough exercises and intensity techniques to make sure your muscles get the workout they need.


Perform the exercise pairs (marked A and B) in alternating fashion. You’ll do one set of A, rest as prescribed, then one set of B, rest, and repeat. Complete all sets for one pair, and then go on to the next one.