me, I'm 58, and broke my foot in July (car accident), and realized I'd gotten WAY out of shape and overweight, high blood pressure etc. WTF? after 2-3 months of casts and stuff, I'd totally lost whatever muscle tone I'd had left in my right leg. ugh. started riding again almost immediately, and wow, I was downshifting for the tiniest little slopes, had no strength at all. now, a couple months later, I can maintain a pretty good pace for 20-25 miles, and have some strength back in my legs, my beer belly is way reduced, I've lost 20 lbs (plateauing there but as long as I'm building muscle, I must be burning off fat as we all know muscle is heavier than fat...) my pants are all too loose. I have to stick with it all winter, and try and put an hour or two on the bike at least 3 times a week (tough with my work schedule)