1. get a treadmill desk of any variety.
2. set up your computer as you like.
3. get to work.
4. wait until you are concentrating on an email or a task and make a misstep.
5. fall ungracefully.
Note #1: do not forget to flail on the way down to make sure you get your coffee or soda all over you and your computer
Note #2: do not forget to whack your skull on your desk or other furniture on the way down.
optional: if you fortunately have installed a backstop to the treadmill and have forgotten to attach the little string for autostop on the treadmill, you can also enjoy the benefits of the treadmill belt sandpapering your flesh and your clothes while you struggle to get off of it.
voila! you are now cured from *ever* wanting to use a treadmill desk again!