Standing on one, but really I think the main point is you aren't peddling. My legs would absolutely freeze riding a non-electric bike, each rotation of the pedd

Standing on one, but really I think the main point is you aren't peddling. My legs would absolutely freeze riding a non-electric bike, each rotation of the peddles as your knee flexes all the warm air is forced out of your pants and then cold air is sucked in as you straighten your leg at the bottom. At least this was the case for me with jeans. I would do ~25mph on a fold-up type scooter in the same weather, just adding the full visor helmet, and didn't feel even slightly cold.