The 5-Step Sleep Audit
A 10-minute check-in with your nights
Moonlight · A free guide for people who want to sleep better — without a 30-page protocol or a $400 wearable.
Before you start
This isn't a sleep diary. It isn't a 30-day challenge. It's five questions that take ten minutes, and at the end you'll know one thing: what to try tonight.
You don't need an app, a tracker, or a sleep study. You need a pen, a minute of honesty, and the willingness to change one small thing.
Ready?
Step 1 — When do you actually go to bed?
Not when you intend to. Not when you get into bed. When the lights go off and you stop looking at a screen.
Write down the time you fell asleep last night — your best guess. No one's grading this.
Why this matters: Most people think they sleep eight hours because they're in bed for eight hours. They're not. The gap between "in bed" and "asleep" — what researchers call sleep latency — is where 30–60 minutes quietly disappear every night. If you don't know the gap exists, you can't close it.
Your answer: ____ : ____ PM
Step 2 — How many times did you wake up?
Again, last night. Best guess. Don't count the time you got up to pee — count the times you woke up, looked at something (a clock, a phone, a ceiling), and had to fall back asleep.
Why this matters: Waking up 1–3 times a night is normal. Waking up 5+ times and lying awake for 20+ minutes each time is not — and it's the single biggest predictor of "I slept terribly" mornings, even when total sleep time is adequate. The number isn't the problem. The staying awake is.
Your answer: _____ times
Step 3 — What's the first thing you see when you wake up at night?
Be specific. Phone screen? Clock on the nightstand? Partner's face? Ceiling? Your own thoughts?
Why this matters: Whatever you see first becomes the thing your brain latches onto. If it's a number (a time, a battery percentage), your prefrontal cortex — the calculating, planning part — wakes up with you. And that's exactly the part that should be asleep. The number becomes a stressor. Cortisol ticks up. You're awake.
This is the single most common, most fixable sleep problem most people have. And almost no one talks about it.
Your answer: _________________________________
Step 4 — What's the temperature in your bedroom right now?
Go check. We'll wait.
Why this matters: Your core body temperature needs to drop about 1°C (1.8°F) for you to fall and stay asleep. A warm bedroom — above 20°C / 68°F — actively fights this. Research from the National Sleep Foundation and multiple sleep labs converges on 16–19°C (60–67°F) as the optimal range for most adults. If your bedroom is 22°C+ and you're wondering why you can't sleep, this is probably why.
Your answer: _____ °C / °F
Step 5 — What did you do in the last hour before bed?
Not what you meant to do. What you actually did. Scroll through your phone? Watch something? Read? Stare at a wall? Have a drink?
Why this matters: Light — especially blue-spectrum light from screens — suppresses melatonin production for up to an hour after exposure. Alcohol, while it helps you fall asleep, fragments the second half of your night, destroying REM sleep. And "doomscrolling" activates the exact arousal systems your brain needs to shut down. The last hour is the easiest hour to change — and the one with the biggest payoff.
Your answer: _________________________________
Your result: What to try tonight
You now have five data points. Here's how to read them:
If Step 1 revealed a gap (in bed ≠ asleep):
Try tonight: Move your bedtime 30 minutes earlier than your intended bedtime. Not your "I should sleep" time — your "I should start winding down" time. The gap closes when you stop fighting it.
If Step 2 showed 3+ wakeups with 20+ minutes awake:
Try tonight: Skip ahead to Step 3. The wakeups are a symptom. The staying-awake is the disease.
If Step 3 was "phone" or "clock":
Try tonight: Turn your phone face-down. Put the alarm clock against the wall. You don't need to see the time at 4 AM. You need to not see it. This is the single highest-leverage change most people can make. Give it three nights.
If Step 4 was above 20°C / 68°F:
Try tonight: Drop the temperature. Open a window, turn down the thermostat, lose a blanket. Aim for 18°C / 65°F. You'll be cold for five minutes. Then you'll sleep.
If Step 5 involved a screen or a drink:
Try tonight: Pick one. Just one. Either: no screens in the last 30 minutes before bed (read a book, listen to a podcast, stare at the wall — the wall is fine), OR: no alcohol in the last three hours before bed. Don't try to fix everything at once. One thing. Three nights.
The rule
Don't try to fix all five. Pick one. Give it three nights. Then come back and pick another.
Sleep is not a project you finish. It's a practice. And the best practice starts with the smallest change you can actually sustain.
What's next
Every Sunday at 7 PM, Moonlight lands in your inbox: one piece of sleep science, one experiment for the week, an honest product review, a reader story, and a thought to close on.
No course that ends. No sales pitch. Just sleep — Sundays, 7 PM.
You're already subscribed. Your first issue is on its way.
See you Sunday.
— Moonlight ☾
This guide offers general information about sleep and does not replace medical advice. For persistent sleep problems, please consult a doctor.
© 2026 Moonlight. Share freely — sleep is not a competitive advantage.