Teenagers are getting less sleep now than they did in late 2000s
medicalxpress.com
medicalxpress.com
f.lux > sleep research: https://justgetflux.com/research.html
How does blue light blocking compare to breathing patterns for sleep and exercising at least an hour before bed and sugar and animal protein restriction after dinner?
Sleep hygiene: https://en.wikipedia.org/wiki/Sleep_hygiene