The push-up is a staple bodyweight exercise – but is it useful for building muscle? Here's how many push-ups reps it takes to ...

POV: You have 3 sets of 8 to 10 goblet squat reps. You’re feeling good today, so you pick up a weight heavier than your normal. You only manage to crank out 6 reps, falling short of the goal of 8—you ...