Think your desk doesn't feel right, but now sure how to fix it? Our simple guide covers the main things to check and tweak.

 Illustration: Raleigh Swick, Rally Health

Key points:

• Head straight up in line with shoulders and torso.
• Top of monitor in line with eyes or slightly below.
• Upper back straight with shoulders and arms relaxed at the sides.
• Arms relaxed at sides with a 90 to 100 degree angle at elbow; adjust armrests to support arms with wrists straight so hands are in line with forearms.
• Adjust backrest to support curve of lower back.
• Adjust seat height so feet are on floor or footrest. Comfortable space between desk and thighs; knees extend past seat and form a 90 to 110 degree angle.