Do you look at p 0 r n often? Do you have a history of p 0 r n use?
If you do, that can be a big part of it. p 0 r n gives a massive hit of dopamine ... and like any other drug, your receptors become less sensitive over time.
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Also, there is an overlap with addictions and adrenal fatigue, and for a variety of reasons.
You are low on energy, so you look for things that will give you a boost, such as p 0 r n.
Plus ... being stuck in a state of stress makes it harder to control impulses. The fight or flight response makes you more impulsive, and for good reason. You don't want to be over-analyzing when a threat is charging at you.