Just started doing a little bike riding for fitness last week. I'm a long time jogger that's been having some knee pain and don't want to do any damage to the old body. I'm 62 and retired in July. Think I pushed it a little too hard a couple of days ago, only rode 8 miles, but very hard for a beginner. I had severe spasms on the inside of my thighs during the night. Anyhow, hello to all, and I'll be jumping in and out trying to learn things.