Heartbeat

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A heartbeat is a headmate that fronts to keep the body moving to complete a task, regardless of how much pain the body is in. They may have a higher pain tolerance, although this is not required.

The term was made with chronic pain in mind, but can be used for any reason.

Related Terms
Shock absorber may be a synonym, and cassmate may overlap in some cases.

Hell-bent and vital may overlap.

History
The term was coined by Pluralpedia user Wrmsys on faer Tumblr blog on August 28, 2023.