Sleep is not rest. The brain during sleep is not a quiet brain — it runs processes that cannot happen during wakefulness, including glymphatic clearance of amyloid and tau proteins, memory consolidation, immune function, and emotional processing. Sleep has never been easy in my family. My father spent most of his adult life lying in the dark, waiting. I carry both his late melatonin release and my mother's hypervigilant light sleep. This post is what I eventually learned about what sleep is actually doing while you're not awake.

There is a specific week of the month where everything becomes harder. Not harder the way Monday is harder than Friday. A different kind of harder — where tasks that were manageable seven days ago now require effort that feels unreasonable, where you lose your keys three times before 10am. If you have ADHD, that week is not a coincidence. It is your dopamine system responding to a hormonal signal nobody told you about.

Your cortisol doesn't care about your monthly reset. It has its own schedule, its own logic — and that logic was almost entirely mapped out using male subjects. Here's the curve they forgot to show you.