Sleep deprivation reduces moral awareness (article link)

It's not hard to imagine the implications of this for PMO and sex addiction. Even cheating in particular, in context of a relationship I'm sure it's obvious to SOs:

https://www.forbes.com/sites/roomyk...inadvertently-becoming-cheaters/#8f4055a4fbef

The prefrontal cortex regulates the activity level in the amygdala. In a sleep-deprived individual, the impaired prefrontal cortex cannot regulate the amygdala, thus leading to extreme emotions. Thus, sleeplessness tends to undermine the brain’s capability to manage emotions or have the brain energy required for the contemplative processing necessary for making ethical choices.

In a tired and sleepless state, the brain starts to conserve its scarce resources. A sleep-deprived brain disables higher order resource-intensive activities such as doubt, skepticism, and argument. This leads to “willful blindness” towards ethical and fraudulent choices. A sleepless and an overloaded human mind essentially becomes morally blind.

Professor Michael Christian, at Kenan-Flagler Business School, UNC, states, “Empirical research shows that sleep deprivation is associated with lying, cheating, stealing, and other unethical behaviors.”

Research has shown that even moderate sleep deprivation produces impairments equivalent to those of alcohol intoxication. An individual’s performance after 17 to 19 hours of sleep deprivation is comparable or worse than that of someone with a blood alcohol concentration (BAC) level of 0.05%. Sleep deprivation of longer period results in performance levels equivalent to a BAC of 0.1% - one is legally drunk.​

So not only does it predispose people to PMO, the mental state you're in is already one of intoxication anyway.

 

It definitely makes it more challenging, and of course all those well dressed, well educated people at the office wouldn't give any serious thought and planning for sleep other than sort of "binge sleeping" on the weekend and propping themselves up with coffee during the work week even if their work already requires more complex management than that.