Standing and Sitting:
A proper chair will support your arms and shoulders and help prevent strains of the neck due to forward thrust.
Don’t reach for a shelf higher than your head. Stand on a stool. Don’t reach or look up for any length of time.
Don’t sleep on your stomach. Lie on your side and adjust your pillow to maintain your head and neck in a neutral position. Keep your arms down.
If you sleep on your back, put a pillow under your neck, not your head. Use a bed board or a firm orthopedic mattress. A proper pillow is 3-4 inches thick, 6-7 inches wide, 16 inches long. If you have a neck problem, try an inexpensive contoured pillow, such as Jackson Cervipillo. Don’t sleep in a chair.