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The world’s largest ex-gay organization, Exodus International tells clients to wear a rubber band on their wrist and snap it when they see someone attractive of the same sex. In this Truth Wins Out PSA, a survivor of rubber band “therapy,” Brian Nesbitt, discusses his experience.

Here is what Exodus instructs its clients to do:

“Every time you catch yourself watching someone erotically or engaging in fantasy, snap the band. This will cause a moderate stinging pain, which serves as a shocking reminder of what you are doing. This should help you interrupt the spell.”