What is sleep hygiene?

What is sleep hygiene?  For someone like me who works in the field of sleep this is a no-brainer question. But when I give interviews or when I talk to people and I say, “look, I don't just work with sleep hygiene, a lot of my clients have a perfect sleep hygiene but their problems go beyond that”, I realize that many don’t know what I'm talking about when I mention sleep hygiene. So today I want to give a couple of sleep hygiene examples. #sleeplikeaboss #christinehansen #sleephygiene #sleeptips #sleepcoache