Weird this is getting downvoted. Its true for my own experience - my life is much better since I've stopped with all the sleep gadgets and panicking when I get less than 8 hours sleep in a night.

Its also a view backed up by professionals: https://www.theguardian.com/lifeandstyle/2019/jun/17/why-sle...

And there are books written on this too: https://www.amazon.com/gp/product/1456492543/