I deffinately need to train more, no doubt about that! I am progressing nicely I think, considering it wasn't long ago I could barely hold 15 mph. over a 5 mile ride, not to mention I'm down 25 lbs! I do find it odd that as soon as I got off the bike, no cramps. Still hrs later since I finished no cramps at all and I really don't feel taxed energy wise. I came home and cut the grass, did laundry, and cleaned the house.