If falling asleep feels like lying down next to a very enthusiastic spreadsheet, you’re not alone. For a lot of women, (me included) the problem isn’t (just) tiredness — it’s that the brain hasn’t been given permission to stand down.
This is where cognitive offloading comes in: the simple (and oddly powerful) act of taking thoughts, tasks and decisions out of your head and putting them somewhere external, so your nervous system can stop treating bedtime like a planning meeting.
Deep sleep is the first, chunky phase of the night. It tends to show up earlier, in the first half of sleep, and it’s when your brain shifts into physical restoration mode.
It’s also when the glymphatic drainage system does its nightly clean-up, flushing away metabolic by-products that build up from a full day of thinking, focusing, remembering and problem-solving.
Modern life creates a lot of mental waste, the exhaust fumes of cognition: open loops, micro-decisions, half-finished plans, low-level worry. Deep sleep is, in part, the brain’s clean-up crew. But it only drops in when cortisol drops out.
Cortisol should peak in the morning and gradually descend across the day. For many high-capacity women, it stays a bit too lively at night — not always because of big stress, but because the brain is still busy processing.
When your mind is still running simulations, your body doesn’t get the memo that it’s safe to fully power down.
That’s why a cortisol descent ritual often works better than a generic wind-down routine.
You don’t just need calming. You need closure.
Around 30-60 minutes before bed and try any or all of these:
1. Do an open-loop sweep. Scribble down everything circling in your head: emails to send, decisions to make, random ideas, life admin, awkward conversations, holiday fantasies. This is a messy brain download, not a beautiful to-do list.
2. Give yourself a ‘stimulation sunset’. You don’t have to ban screens entirely, but consider switching to low-stakes input (familiar shows, calm audio, gentle reading). Avoid new information that invites thinking and sensory activation.
3. Add a body cue for safety. A warm shower, legs up the wall, or slow breathing with a longer exhale gives your nervous system a physical signal that the day is done. It gives your brain the clear cues it’s safe to wind down.
4. Create a tomorrow anchor. Choose your top three priorities for tomorrow, then write the very first action you’ll take for the most important one. If something is unresolved or looping, park it with: Next tiny step = …. This gives your brain a clear plan, a starting point and permission to stop rehearsing it at 2am.
5. Write the best-case scenario. For the thing you keep mentally workshopping, deliberately script the most likely positive outcome. Rumination is your brain trying to protect you by scanning for threats; giving it a safe, plausible success story reduces the need to keep running the simulation overnight.
6. Set a ‘not tonight’ list. Create a short list titled: Important, but not for bedtime. Pop any big, meaningful or emotionally loaded topics there. You’re not dismissing them — you’re scheduling them for a time when you actually have the cognitive bandwidth.
7. Make a ‘for now’ decision. If you’re stuck on a choice, write: The good enough decision for now = …. Perfectionism keeps cortisol elevated; a temporary decision lets the nervous system power down. You can improve your decision or strategy with a fresh brain on a new day.
8. Give your brain a retrieval cue. Leave out anything you need for the morning (gym clothes, key document, lunch in the fridge). Visible cues signal: this is handled which reduces overnight mental reminders.
9. Name your Tah-dah list. Capture a quick ‘done’ or ‘I did’ list of three small wins from the day. Start the list with: today I completed… This shifts the brain out of scanning-for-problems mode and into completion mode – which is the psychological state that most reliably precedes deep sleep.
You’re telling your brain: nothing is being forgotten, nothing needs solving at 2am.
The goal isn’t to empty your mind, like a Buddhist monk in a cave (though honestly, that sounds nice) – it’s to give your mind a container for tomorrow so your brain can take out the rubbish tonight.
Because deep sleep isn’t something you force — it’s something that arrives when your nervous system feels finished for the day.