How much weight? How many reps?
Somewhere between what your ego would have you do, and your body wants to do, there's a middle ground of enough weight to make progress, and so much that you’re going to get hurt. As long as you work within the boundaries I set in whichever VIGOR Training program you follow, which includes your sets, rep ranges, and rest periods, you will make progress as long as you remain consistent. How much weight should I use or reps should I do? For most training sessions, each set of each exercise has a target rep number. For example, it might be