my lower back used to be fine, sleep over at a friends house on the weekends, and lower back KILLS. now it kills me when i bend over, was gettin better, but did shrugs and squats today haha. so now i feel it nice. how does sleeping in another bed mess up ur lower back that bad? i can barley bend over 8" without going lol.. but if i breath out hard and go down slow it works!