This might be of interest to people who have experienced sleep disturbances. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2725210/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5245115/

This year I started getting sleep paralysis quite regularly--I had experienced it maybe two or three times before but it started happening super frequently around September. It's been coming in waves, but there are times when I'll get it almost every night and often multiple times in a night...