Thanks, minniespal. That is great to know!! My butt needs some serious work.
LOL Rajah!! From ivillage.com:
"Think of spinning as an indoor group ride led by a drill instructor.
You have a group of spinner stationary bikes arranged in a format so that every participant can see the instructor/coach who is also on one of the bikes. The instructor takes the class through a workout/ride of about 45 minutes, barking out commands to sprint, ease up, or add resistance to simulate hills.
The spinning craze was started in California (where else?) by a guy named Johnny G. He designed a stationary bike which looks pretty primitive compared to the electronic, computerized bikes you see in gyms today. It has a huge flywheel which makes it resemble an exercise bike your parents might have owned. But the spinner is deceptive. Getting that big flywheel turning is like starting from a dead stop on a real bicycle.
Once you get it going, the momentum of the flywheel enables you to "spin" the pedals as you would on your bike outside. The ride is closer to that of a real bike than any other stationary bike I've tried. Couple that with a seat that adjusts fore and aft, not just up and down, and multi-position handle bars that also adjust up and down--and you've got a bike that an avid cyclist can get a great workout on while recreating her favorite position on the bike. Some gyms even swap the pedals with toe clips for clipless pedals so that people can wear their own cycling shoes during the class."