Creepusmaximus
New member
I'm kind of getting the feeling I'm in a time warp on those because I seem to be about the only one who does them at the gym.
Anyone else do GM's, I think they are very effective for my lower back and I've never hurt myself doing them. Not sure why no one else does them??
Anyone else do GM's, I think they are very effective for my lower back and I've never hurt myself doing them. Not sure why no one else does them??

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