Gabe Collins exercises using a brick as a weight during a Punk Rock Aerobics class at The Middle East nightclub in Cambridge, Mass., April 24, 2004. Exercisers jump, head-bang, kick and punch to hits by The Ramones, Sex Pistols and other indie-rock favorites. (AP Photo/Josh Reynolds)
Slavercise was started by a Dominatrix/personal trainer in New York City. Feeling like most of her clients would respond better not only to a dominate women but one in a hella sexy black latex costume, she developed programs around men and women who enjoy S/M kinda things into a workout. Most of the clients who participate get rewarded they say through the release of all the hormones during the session. Clients are told to perform certain sets and reps or they will be punished by the Dominatrix, making workouts all the more intense for the participant. Now however it has caught on everywhere and people are loving it.