Even a lot of the more specific habits that do sometimes get recommended ("sleep hygiene") are: 1) Potentially expensive/disruptive (control of the sleep envir

Even a lot of the more specific habits that do sometimes get recommended ("sleep hygiene") are: 1) Potentially expensive/disruptive (control of the sleep environment may imply moving house or installing soundproofing materials, air conditioning, etc.) 2) Contradictory (get out of bed if you don't fall asleep in 15 minutes, but also don't look at the clock) 3) Not individually tested or validated 4) Based more on old-school behaviorism than on anything specific to the processes of sleep. EDIT: forgot an important one 5) Only addressed at difficulty falling asleep initially, not staying asleep or improving sleep architecture.