It's for the pump. More blood, more nutrients. Etc.Now a lot of powerlifters transition quickly to bodybuilding. Safer lifting is everywhere now, and frankly, the drugs are better, or rather the info on how to use them is better. Haven't bodybuilders been successful transitioning into powerlifting? Ie: they built all the raw muscle then they transition to strength work.I could be full of shit, I don't really follow either group much, but that's what I heard from someone I consider smart on the matter. I am sure it has been done. But power lifting gets even less endorsements than bodybuilding, so it's less likely. Also age. 10-20 reps starts looking nice at 30 if you spent your whole 20's chasing one rep max. Back in the days of Zane, Ferrigno, & Schwarzenegger, most of the people showing up at powerlifting meets were bodybuilders, and vice versa. This was before the health & gym craze that started in the late 70's; back when action stars like Eastwood couldn't be seen publicly lifting weights because of the stigma that only homosexuals & other "weirdo"s hit the weights.