The mention of deep sleep being necessary to memory formation is especially interesting to me.
I went 5-8 years or so with poor quality sleep. While it is difficult to estimate correctly at home, my Zeo was regularly giving me 15-20m of deep sleep a night and I had a very hard time fixing it. While I performed fine at work, I had a hard time recovering from any sort of physical symptoms (such as tension) and building muscle memory. I certainly felt pretty bad, and it was like things didn't 'stick'.
Nowadays I get 40m on average. Still not great but getting better.
I went 5-8 years or so with poor quality sleep. While it is difficult to estimate correctly at home, my Zeo was regularly giving me 15-20m of deep sleep a night and I had a very hard time fixing it. While I performed fine at work, I had a hard time recovering from any sort of physical symptoms (such as tension) and building muscle memory. I certainly felt pretty bad, and it was like things didn't 'stick'.
Nowadays I get 40m on average. Still not great but getting better.