I've done "coding on the treadmill". It's difficult at first but you get used to it after a few weeks. Of course you can't run and type at the same time, but wa

I've done "coding on the treadmill". It's difficult at first but you get used to it after a few weeks. Of course you can't run and type at the same time, but walking and typing is perfectly doable. It's actually pretty great - you can easily put in hours and hours of walking time every day without even noticing.