Curves is a gym dedicated to women whose unique approach has made it one of the top franchise businesses over the last decade. Whether exercise is a new word in your vocabulary, or you've been a dedicated athlete for your whole life, you can get a good, safe workout at Curves. Devote just 30 minutes and you will go through an entire circuit of equipment that is air pressure-operated, so you don't have to hassle with changing weights. In between each exercise, you'll stand on a cardio pad and walk or jog in place then be instructed to take your place on the next machine. It's simple, addictive, and very effective.