What if I told you that you could torch your upper body in just nine minutes — if you’re prepared to try 90 reps of decline push-ups against the clock. This upper-body strength challenge will fatigue ...

The push-up (or press-up, or push-up, take your pick) is the do-everything, no-kit exercise for the upper body – and maybe one of the best overall exercises you can do, period. Every body is different ...