Health And Wellbeing

This is a example of bad posture while using a computer.

Desk Dimensions; Have a large desk space so its not all cluttered and you have enough desk space to rest your arms and find the correct arm positioning.

Posture in chair and seating; Get an ergonomic chair, and sit straight up. should place elbows at 90 degrees.

height; Desk should be high and low enough so your elbows are on a 90 degree angle while placed on desk and key board.

Feet Placement; Have your seat set so your knees are on a 90 degree angle and are firmly on the ground.

Position of monitor, The position of the monitor should be on direct eye level, eyes should be sitting at 90 degrees with the screen. You should not have to look up or down.

Keyboard And Mouse Relative To User;  Your elbows are on a 90 degree angle while placed on desk and key board. keyboard and mouse should be in line with your elbows. 

Rest Periods And Exercises. You should have regular rest periods to increase blood flow through the body. It may stop blood clots.