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Definition #1:

A muscle-bound gym rat who workouts to eliminate his personal demons.

Definition #2:
A personal trainer who is skilled in the art of exercism, and helps others use various workout routines to redeem themselves.
James couldn't kick the habit of smoking, so he became an exercist. He eventually exercised his demons away.

Ex: 2
After Nick got turned down by every girl in school, he went out and got an exercism. The Exercist gave him a 5-day workout plan to follow religiously.
by NlightN1 January 30, 2011
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