bump for a USP rep resonse.
Note - I'm in no way trying to bash USP products, as I've found they've helped me tremendously during my latest cut. I'm just trying to determine what the culprit is to my lower back tightness. It could be my high protein diet, it could be supps, or even the combo of the two. I was just wondering if the above mentioned supps could cause any stress at all. If not, then I would continue to take them.