<Table> <Tr> <Td> </Td> <Td> This article's tone or style may not reflect the encyclopedic tone used on Wikipedia . See Wikipedia's guide to writing better articles for suggestions . (September 2013) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article's tone or style may not reflect the encyclopedic tone used on Wikipedia . See Wikipedia's guide to writing better articles for suggestions . (September 2013) (Learn how and when to remove this template message) </Td> </Tr> <P> Indoor cycling, as an organized activity, is a form of exercise with classes focusing on endurance, strength, intervals, high intensity (race days) and recovery, and involves using a special stationary exercise bicycle with a weighted flywheel in a classroom setting . It is commonly called spinning . </P> <P> Classes generally use specialized stationary bicycles . Features include a mechanical device to modify the difficulty of pedalling, specially shaped handlebars, and multiple adjustment points to fit the bicycle to a range of riders . Many have a weighted flywheel, which simulates the effects of inertia and momentum when riding a real bicycle . The pedals are equipped with toe clips as on sports bicycles to allow one foot to pull up when the other is pushing down . They may alternatively have clipless receptacles for use with cleated cycling shoes . Padded shorts aid comfort and avoid the chafing caused by the sewn seams in underwear . </P>

What kind of bike is used for spin class