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Engaging in or watching intense physical exertion provides a release of endorphins.

In the lifestyle and wellness space, the term is often used metaphorically to describe high-intensity core workouts.

The entertainment value of these practices—whether fitness-based or sensory—stems from a few core psychological drivers:

Successfully completing a "belly torture" session (in fitness) provides a sense of mastery and physical superiority.

In professional settings, this is choreographed as a form of "victimless" physical comedy or sensory performance, focusing on the boundary between pleasure and discomfort. Psychological Appeal