I mean... I break a sweat from 3kms. I lack the self-control to ride slowly — so I commute hard, sprinting off every line, and as a result sweat like a whore in church no matter the distance. Indeed, fitness makes you sweat more quickly; your body is ready to do its thing, so you start pedaling and it says “ok, this bullshit again, what is it with this dude, ok, initiate sweat glands, let’s cool this dumbass off.”

But if OP wasn’t feeling like this before and now does... I mean, any chance he’s got a stomach virus or something? A short ride leading to feeling like absolute nauseous garbage sounds like the onset of a bug to me, for whatever that’s worth.