The Biggest Missing Link in the World of Sleep Optimization?

There are three primary causes of sleep issues. The first is predisposing factors, right? Predisposing factors are anything that makes an individual more likely to deal with sleep issues versus someone else. Next you have precipitating factors where for a period of time, you struggle with sleep. And the last thing that forms, kind of the last nail in the coffin on that, so to speak, is something called conditioned arousal.