Really interesting post. It is also quite counterintuitive - I personally think a lot of people are injured in sleep (including myself), and some of the postur

Really interesting post. It is also quite counterintuitive - I personally think a lot of people are injured in sleep (including myself), and some of the postures indicated look like they could be very challenging/dangerous. Maybe the injuries come from lying on soft mattresses and a hard surface would be better as it provides more immediate feedback of bodily stress..?