With the machine switched off, put your arms on the front part of the treadmill with legs out behind you in a plank position. Then, slowly start running with your legs, moving the belt manually. If you start to speed up too fast, slow down your running to a more controlled, deliberate movement. Keep your tummy tight into your belly button, and be careful not to arch your lower back. Do this for 60 seconds.
Hacked IKEA Expedit Standing Desk With Built-In Look: This is by far one of the most sleek-looking DIY standing desks that we've come across. While it isn't cheap (IKEA parts cost about $230) it does make up for this with its incredible looks and bountiful storage.