how many sets are you doing ? Also ...just drop the thursday workout ...all it is doing is impinging on your recovery ability...and doing nothing for growth.....do not train lower back 2 times a week! you are asking for an injury....only do it once a week ....only deadlift hard once every 10-14 days .....check out the routines of world class powerlifters they only work lower back once every 10-14 days ....