I've always had very tight hamstrings... even before bicycle commuting. Yes, I'm even tighter now... but I don't believe that has anything to do with cycling. Mostly age and sitting all day at work.

At my physical, the DR. asked me to touch my toes. I lifted my foot and touched my toes. He said, "No, feet on the ground and no bending of the knees"... I was a good 12-14 inches from being able to touch my toes. He asked me, "When does it start to hurt?" I responded, "As soon as I look at my shoelaces and realize I have to tie them." It's not the cycling for me.