ABC (Ask Bret Contreras) – Why Do I Round My Back When I Deadlift Heavy? By Bret ContrerasAsk Bret Contreras (ABC), Powerlifting23 Comments Dear Glute Man, I try to keep a good arch when I deadlift, but when the weight gets really heavy, say around 95% of my 1RM and higher, I find… Read More November 4, 2010