Lots of people know this, but don't change anything in their "working lifestyle". Would be interesting how many people get ill by not keeping such daily things clean, maybe then some guys would change something.

Respect to the technicians that have to touch dirty keyboards of the others every day. :(

Another thing that is essential for a healthy life when you are sitting all day in work is keeping your body fit. Taking the stairs instead of the elevator in the evening at home is no big deal but helps a lot.