Spinning is an aerobic exercise that takes place on a specially designed stationary bicycle called a spinning bike. Spinning is relatively safe because it is done with a smooth rotary motion that does not involve road shock of running. Spinning burns a large number of calories (about 450 in 45 minutes) and offers an awesome aerobic workout that makes your heart pump fast. It also tones your quadriceps (front thigh muscles) and outer thigh muscles!
Because you stay in one place with the same basic movement throughout, Spinning doesn't involve a lot of coordination, it's easier to do than other types of aerobic classes. And although you follow the general instructions of the spinning teacher, you are in control when it comes to your pace. You can finish a spin class, regardless of your fitness level, simply by adjusting your pace or the tension knob on the bike. Spinning was created by world-class cyclist "Jonny G" as a convenient and quick way to train for races almost 15 years ago and is rapidly growing in popularity.