None! I use a very uncomfy IKEA wooden step to sit on. I've got a standing desk for years and had a treadmill for a while. But those are loud and take up too much space. You don't WANT to be comfortable. You need to…
None! I use a very uncomfy IKEA wooden step to sit on. I've got a standing desk for years and had a treadmill for a while. But those are loud and take up too much space. You don't WANT to be comfortable. You need to…