I heard this word today, and I realised how strange it sounds. Especially when you could also say running. And I continued thinking: does jogging, the exercise, have anything to do with jogging your memory? Let’s see.
The verb to jog dates back to 16th century, when it meant to shake up and down. It’s exact etymology is unclear, but it seems to have been related to the Middle English shoggen (to shake, jolt, or jerk).
It was first used to refer to exercise in 1948, originally referring to a training regimen for athletes. This use of the word might be derived from its use in horsemanship, in which jogging referred to a light warm-up exercise (to jog, shake the muscles before a race).
So jogging basically means shaking or jolting, which is fairly logical, as that’s kind of what you’re doing to your limbs/muscles when you go jogging.
And to your memory too: if you try to jog your memory, it’s like you give it a little shake to help you remember.
I said at the beginning that you could say running instead of jogging. The two are strictly different, with jogging referring to anything below 6mph, and running anything above.