 US government said if you sit eight hours a day, one hour on the treadmill basically does nothing. What are you supposed to do? If you work eight hours a day at a cubicle, or at a computer, you can't go to the gym for like five hours, so how do you... Treadmill desk. Treadmill desk is the most practical investment a person can make of $1,200. Sitting is the destruction of the human body. I've actually heard that a lot. It is. That sitting is horrible. Walk, man.