My hamstring is feeling much better today. Yesterday, after we got out and about, it started to feel better. It was still sore, and made my knee feel weak, but by last night it was well on it's way out. Today..... not a trace of pain. I took it very easy on the bike today. Only did 25 mins at a low pace. The rest of the time was spent on upper body weights. Tomorrow, I plan to tackle the treadmill. Not something I'm looking forward to as I've never liked running on them. It's just not the same.