When I do deadlifts and squats without pushing my abs out by using the valsalva maneuver, I get pain in my lower back.
So I started using the valsalva maneuver and it helped quite a bit. BUT, the problem is that now I can't do 1 rep of deadlift or 1 rep of squat without feeling like I will faint...it is very uncomfortable and sometimes I start to see dots appearing in my vision...is there a way to prevent this from happening? Maybe I lack enough iron in my blood? Should I take supplements to prevent it?


