get out there on the bike path and jog or whatever and be proud of the message you're sending out - that you're disciplined, you respect your body by not poisoning it, you're lithe, nimble, athletic and lively. You're a leaf among dead wood. A free spirit among the encumbered. Shrug off the small piercing eyes of envy and surge forward 'cos you can! [Editor's Note: phew! Suffering a bit of delayed hostility here toward this grumpy old (and overweight) bugger who growled at me on the cycle path the other day for no good reason 'cept he probably hated cyclists].