The Applied Exercise Science Lab is seeking sedentary subjects aged 18-55 to study electrically assisted bicycling (bicycle with a motor that only provides assistance when you pedal) and its potential effects on overall health. The experiment will consist of five separate sessions (up to 2.5hrs long) over seven weeks. Benefits of participating include: body composition (% body fat), fitness assessment, bone density, glucose tolerance assessment and blood lipid profile. As compensation, you will be entered into a raffle to win an electric bike.