I could barely stand when I got home! I thought it was the chronic fatigue flaring up!( Im used to riding feeling like death warmed over. Its going to come in handy when I can ride far enough to do hills. There is a small mountain near by and thats my goal. I figure all those years of pain, tiredness and suffering will make me think, jeez this IS NOTHING, as my legs burst into flame on its oh so killer gradients!