[As_You_Wish]

yeah, not sure about the popularity aspect, but with serious weightlifters, you go slow. I've known about negative reps for 45 years, that that's where the muscle is actually built. Those last 2 or 3 reps, you use shit form to get the weights where they need to be - usually swing the weights, then lower it down ever so slowly. Of course, if you have a partner, they help you lift the weights up in good form, but if you have no partner, you resort to shit form because otherwise you can't get the weight to where they need to be. That extra burn is great.