Definition

Low-Intensity Steady State cardio—jogging, cycling, or walking at a conversational pace. The tortoise to HIIT's hare.

Example Usage

I do LISS on rest days to aid recovery without taxing my system.

Origin

Modern fitness terminology, popularized in the 2010s

Fun Fact

LISS burns more total fat during the session but HIIT burns more in recovery

Source: Cardiology and Sports Training research

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