Generally speaking, side or back sleeping is the best. I say this because true stomach sleepers must wrench their necks to either side. When you are a small child, it works because you can turn your head 90 degrees to either side. As you get older, this becomes more difficult and you can end up with a strained neck.
Back and side sleeping will keep your spine in its best alignment. Sometimes, snorers, sleep apnea sufferers, or people with heartburn/acid reflux may have some difficulty with these sleep positions.
However, with a good neck pillow that opens up the sinuses and restores the neck curve, apnea and snoring are much improved. With a slight incline, reflux disease can be improved also.
A neck pillow also keeps your head level when you’re on your side. Put a pillow between your knees and you keep your legs and pelvis level too.
Additional Reading resources:
- Traction Neck Pillows
- How to treat a Stiff neck
- How to Get Restful Sleep When you are Suffering with neck Pain
- Wishing Yourself a Good Night's Sleep
- The Tri Core Neck Support Pillow - understanding how to best use this pillow support