I do my grocery shopping, run errands, and pick up heavy loads with my 30-pound bike and a bit of physical effort and the occasional assistance of my bike trailer. I am not a jock—I’m a 45-year-old woman with asthma, and I am, according to Kaiser, carrying around enough extra pounds to put my health in jeopardy (feh!). If I can do it, you probably can too. The bike is a wonderful invention that allows me to travel three times as fast as I would on foot with one-third the energy expenditure, so I don’t have to be superwoman to get myself where I need to go. Sixty percent of car trips are five miles or less—a distance easily traveled by bike, especially for those of us who live in the flats of the East Bay.