spazzercise 

A form of aerobic exercise based on the music of the band Spazz

Man, he's worn out and beat up from thrashing so hard all the time and taking so many drugs. He needs to get into shape with some spazzercise.

spazzercise by fake gurz June 15, 2009

spazz-ercise 

failed attempt to keep up or follow along to an exercise routine

Jim's convulsive thrashing to the latest Denise Austin exercise DVD still burned calories but definitely was a stellar example of spazz-ercise.

spazz-ercise by Happy Girly of course! January 24, 2011