Correct posture and set up for computer use

A	Eyes should be slightly above the top of the screen and no less than 50cm from the screen.
B	Sit upright and close to the desk.
C	Forearms should be approximately horizontal and supported by the desk. A space in front of the keyboard to allow hands and wrists to rest when not typing.
D	Keep wrists straight when keying.
E	Position a mouse within easy reach so it can be used with a straight wrist.
F	Legs should have rooms to move under the desk.
G	Choosing a chair with round edge or curved cushion seat can avoid excess pressure from the edge of seat on the backs of legs and knees. A footrest may be helpful.