Hi {{first_name|there}},
Over the last two weeks we've looked at the afternoon crash and working in focus waves. Both come back to one thing: how well you slept the night before. So this week, let's talk about your brain's night shift, and how your body runs it.
Sleep isn't downtime
While you sleep, your brain is busy:
Filing your memories. During sleep your brain replays and strengthens what you learned during the day, and lets go of what it doesn't need.
Clearing waste. In a landmark 2013 study in mice, researchers found that during sleep the spaces between brain cells widened by around 60%, letting fluid wash through and carry away waste, including a protein linked to Alzheimer's disease. Scientists call it the glymphatic system, and they're still working out exactly how it operates in humans, but the message is clear: sleep is when your brain takes out the rubbish.
Resetting your emotions. After a poor night, the brain's alarm centre reacts more strongly and the parts that keep it in check work less well. That's why everything feels harder when you're tired.
Restoring your body. Repair, hormone release and blood sugar regulation all depend on good sleep.
Cut sleep short and you don't just feel tired. Focus, mood, memory and resilience all take a hit the next day.
Six ways to help your brain's night shift
Keep a steady wake-up time, even at weekends. It anchors your body clock more than any other habit.
Get daylight in the morning. Ten to twenty minutes outside, soon after waking, helps set your body clock for a sleepier evening.
Set a caffeine cut-off of around 2pm. Even if you can fall asleep after a late coffee, it can make your sleep lighter.
Go easy on alcohol. It may help you drop off, but it fragments sleep later in the night.
Make your bedroom cool, dark and quiet. Around 16 to 18°C suits most people.
Give yourself a wind-down. Dim the lights and put screens away for the last 30 to 60 minutes. Read, stretch, or write tomorrow's to-do list so it's out of your head.
A thought to take with you
We often treat sleep as the thing we cut when life gets busy. Try flipping it: sleep is the foundation your best days are built on. Every hour of good sleep is a courtesy to the person you'll be tomorrow.
Tonight, choose one of the six and try it for a week.
This week for members
Paid members get extra sections in every issue. Here's a taste of this week's.
BRAIN EXPLORER EXTRA · £1 A MONTH
Two tools for the 2am wake-up
Lying awake at 2am, watching the clock, is one of the most common things people tell me about. The first tool is counter-intuitive: if you've been awake for around 20 minutes, get up…
🔒 Both tools, and the small study behind the second, are for Brain Explorers and above.
THE DEEP DIVE · BRAIN WARRIOR · £7 A MONTH
Your body runs the night shift
Good sleep isn't just a brain event. Your core temperature has to fall, your stress hormones have to settle and your blood sugar has to hold steady through the night. When one of these slips, the brain wakes you up…
🔒 The full Deep Dive, including why so many people wake between 2 and 4am and your 7-day sleep reset, is for Brain Warriors. The first 100 Founding Brain Warriors keep the £7 rate for life.
PRACTITIONER NOTES · BRAIN PRO · £27 A MONTH
Taking a sleep history that finds the cause
"I sleep badly" can mean three very different problems, each with different drivers. The first question I ask is simple: is it getting to sleep, staying asleep, or waking too early…
🔒 The full clinical approach, including the patterns, the screening questions and the tests to consider, is for Brain Pro members.
How's your sleep really?
Sleep is one of the eight areas in my free Brain Performance Analysis. It takes about 12 minutes and shows you how your sleep links to your focus, mood and stamina.
And if you'd like the full wake-to-sleep story, it's all in my ebook, A Day In The Life Of Your Brain.
Reply and tell me: what's the one thing that most often gets in the way of your sleep?
Sleep well,
Alan
This newsletter is educational and doesn't replace a personal assessment. If you'd like to explore what's behind your own symptoms, book a Discovery Consultation. If symptoms are sudden, severe or rapidly worsening, seek urgent medical help.