Wow, this is some great information! I can vouch for thinness not being necessary for fitness. I also love the treadmill, stationary bike, free weights and balance ball. (Plus BodyPump and Zumba!) I laid off my fitness regimen for two years because of chronic plantar fascitis and I feel GROSS. But deciding that my foot hurts whether I walk or not, I ordered a new treadmill and will start getting fit again as soon as it gets here next Friday. Eventually I want to get an Airdyne bike too.