To run at a steady, slow pace as exercise; a slow run.
Origin uncertain, but possibly from 'jog' as a variant of 'shake' or 'bounce' (from Old English 'joggen'). The modern sense of running at a steady pace became popular in the 1960s fitness movement.
Jogging was actually 'invented' in the 1960s by cardiologist Kenneth Cooper who promoted it as exercise—before that, people ran fast (sprinting) or walked, but the steady-paced jog became an iconic form of fitness partly through one doctor's research!
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