Prancercise

Prancercise is an exercise system developed by woman in Florida named Joanna Rohrback, who was inspired by movements of horses.  Even so, she's actually against horse-riding.  Because her YouTube video uses some music that sounds like an instrumental version of Werewolves of London by Warren Zevon, some YouTube imitators have used Zevon's original song in their send-ups.  These people call themselves the First Decents, and apparently wish to organize a Prancercise 5K.