I've been having some pretty strong lower back pain in the last few weeks, and I know it's a common thing for people, but I'm only 20. I've been trying to get back into running and lifting (haven't done much of either since I was in high school) but when my back stiffens up getting out a chair, I get discouraged about it. I'm a college student, so it's not like I'm moving furniture all day long or something. So, have any of you dealt with back pain that you couldn't figure out a cause for? What did you do and how did it work out?