I seriously need to work on my range of motion. Not just to improve my enjoyment of normal activities, if you take a hit, having good range of motion can make the difference between a bruise and a break. I've reached an age where I have to use it or lose it and that goes double for range. However, for me at least it's a completely separate issue from riding. I don't leap on the bike and go flat out with zero warm up but I don't do any stretching either, preferring to go easy until I feel things start to loosen up.