I dont ride much. Maybe a half dozen rides a month at most. So its not like I have a base of miles behind me. I'm a painting contractor so I do a good amount of physical labor. Lots of kneeling. Climbing up and down ladders. Pretty much moving all day long. So when it comes to a ride my muscles are usually tight. This morning I rode 30 miles. The first 7 or 8 miles muscles were tight. Hamstrings cramping. After a hard jam up a hill I finally felt good. And really felt great after 10 miles. So what can I do to get the muscles loose before riding?