grinder

Definition

A long, grueling workout or race segment designed to test mental toughness more than physical ability. Also describes athletes who lack natural talent but compensate with relentless work ethic.

Example Usage

She's not the fastest, but she's a grinder who'll outwork everyone and show up no matter the weather.

Origin

General sports terminology, particularly prevalent in endurance sports and CrossFit

Fun Fact

Grinder workouts are often used to simulate race conditions where mental fortitude determines who survives.

Source: Endurance sports and CrossFit culture

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