"not even to say what an “optimal” sleep position might be" As with most things, maybe there isn't one optimal solution,as otherwise we all would have found ou

"not even to say what an “optimal” sleep position might be" As with most things, maybe there isn't one optimal solution,as otherwise we all would have found out about it, by now and all use it? Human bodies and minds are quite different. So what is comfortable to one person might not work for the next person. Maybe people have pain in the back or in the neck, forcing them into other positions. People with stomach problems rather lie on their stomach. Some people people sleep alone, others together. I know my sleeping position varies a lot and there is no single best one for me.