My IT band problems were spurred on by a poor bike fit. I also find that doing too much too soon (suddenly adding hills or miles) will stress the IT bands. I ended up getting better through acupuncture and massage. Now that I'm not in pain, I use my foam roller literally every day to keep them loose and I do light stretching. PT might help others, but I didn't get much relief. I also think that yoga (warrior poses esp.) are great for keeping the legs loose. Good luck!