I turned 30 this year and am starting to notice that some of my joints hurt, particularly my hips. I think most of this discomfort would be relieved if I became more flexible. I also think that this will help me remain resistant to injury as I get older. My current stretching program is little more than a pre/post workout ritual that is done more because that's what I've always done than for any real purpose and benefit. What do you guys do to gain/maintain flexibility.