I find I have no strength unless I warm up big time first. ie, for for deadlifts, I do 5-10 minutes on the treadmill first, then I stretched out pretty good, then did 5 reps on 135, 5 on 225, 3 on 315, 2 on 365, 2 on 415, then sets of 5 on 455. Takes forever but I stay healthy and am stronger in the big lifts.