How Long You Should Rest Between Sets for the Biggest Training Benefits

By Stephanie Lee on Vitals, shared by Andy Orin to Lifehacker

Rest between sets and exercises has as large an impact on your fitness as the number of sets and reps do
. If your breaks are too short, you rob yourself of their benefits, or worse, increase your risk for injury. If they’re too long, you’re not exercising hard enough
. The sweet spot is based on why you work out, and the exercises you do.

Source:: Lifehacker