Health and Safety issues on Computers

Safety:
Food and Drink at computers. Way to avoid this is by not doing it.
Loose Cables. Avoid this with cable management, which is keeping them tied up and out of the way.
Overloading the power sockets. Way to avoid this is by not plugging 4 billion things into on socket.

Health
RSI, We will get this because we spend ages on computers playing games and all sorts of other devices.
Arthritis, we will get this because we sit on horrible chairs that don't provide any support for our backs causing us to get back problems.