Like I said it isn't health problems that affect biking. It's other stuff. I guess I just think health problems are a private thing and best left to the advice of someone in the field. Like fishing. I wouldn't ask my Dr. what presentation works best for catching trout under certain conditions(unless he/she were a fly fisher). I doubt I will ever ask a mechanic about my health problems or burden them with the conversation . Plus I hate it when people talk about health problems. Hey, let's talk about something...........FUN!