I used to always sleep on my back. About 6 years ago I tried to switch to sleeping on my stomach, but I'd wake up with a very stiff neck. Last year I saw some

I used to always sleep on my back. About 6 years ago I tried to switch to sleeping on my stomach, but I'd wake up with a very stiff neck. Last year I saw some research that suggests side-sleeping helps improve the circulation in the head. It's been easier to switch to falling asleep on my side, than my stomach-sleeping experiment... The Effect of Body Posture on Brain Glymphatic Transport - http://www.jneurosci.org/content/35/31/11034.short http://www.jneurosci.org/content/35/31/11034.short Random report in the media: http://www.dailymail.co.uk/news/article-3191826/Lying-sleeping-improve-waste-clearance-brain-study-reveals.html http://www.dailymail.co.uk/news/article-3191826/Lying-sleepi...