my lower back hurts too on back day or leg day when doing stiffs

a few things that could help and some things that might be causing this

-do ab work this has helped me gr8ly

-make sure u use correct form when doing any exercise

-check ur mattress is it good? do springs pop out everytime u move? how long have u had it?? do u have intense sex on it alot? those might be factors and might wear it out faster

-try either Glc2000 or adequan(PSAG)

http://forums.steroid.com/showthread.php?t=165475 (Psag)

the Glc2000(glucosamine&chondtirin sulfate and other kinds) take bout a month to work but rather than mask the pain they actually help the joints

-take Vit C @least 3 g ED