Mentis- Choose a wake time you can hold every day, then get up within five minutes of it, however the night went.
- Alarm across the room, feet on the floor, curtain open, then the phone.
- Regular sleep timing predicted lower mortality risk more strongly than sleep length, in a study of 60,000+ people.
- In Mentis: "Up At My Set Time", the keystone of chapter 2 of the Sleep plan.
How do you set a fixed wake time?
- Pick a time you can hold on your worst day. Not your ideal time, your realistic one. If work starts at 9:30 and you need an hour, 7:30 might be it.
- Put the alarm across the room, so you have to stand up to switch it off.
- Up within five minutes, every day, however the night went. That's the whole rule.
- Then light. Curtain open or step out to the balcony, one stretch and a glass of water, then the phone. See morning light.
- Weekends: within two hours at first, then within an hour.
Why does wake time matter more than bedtime?
Your body keeps a clock, not an account. Sleeping in on Sunday doesn't pay back the week. It shifts your clock later, which is why Sunday night is wide awake and Monday morning feels like jet lag. Researchers call this social jetlag, and it's common in people whose weekday and weekend sleep times differ a lot (Roenneberg et al., 2012).
The wake time is the end you control. Getting up at the same time, with daylight soon after, sets your clock for the day. It also means you've been awake a predictable number of hours by bedtime, so sleepiness arrives on time. Sleep regularity seems to matter for long-term health as well: in UK Biobank data from over 60,000 people, regular sleep timing predicted lower mortality risk more strongly than how long people slept (Windred et al., 2024).
Common snags
- "I slept at 3, I can't get up at 7." You can, and you'll be tired today. Don't nap. Tonight you'll be sleepy earlier, and that's how the reset works.
- "My family's schedule is different." You don't need everyone on your time. Just protect yours.
- "I keep snoozing." Snoozing is the main enemy. Alarm across the room, and no snooze button for two weeks.
Where is it in the Mentis app?
Chapter 2 of the Sleep plan, "A time I wake up", is built on this. Its keystones are "Up At My Set Time" and "On My Feet, Then The Light". Lessons include "Why Catching Up Never Works" and "Rise Time Sets Tonight", and there's a guided audio, "The Morning After A Bad Night". If you lie awake at night, add the get-up rule.
Frequently asked questions
Should I fix my bedtime or my wake time?
Your wake time. You can't force yourself to fall asleep, but you can get up at a set time. A fixed wake time anchors your body clock and builds steady sleep pressure, so a regular bedtime follows on its own.
What about weekends?
Try to stay within an hour of your weekday time. In the Mentis Sleep plan, weekends count if you're within two hours at first, then you bring it closer in chapter 7.
What if I slept badly?
Get up at your time anyway. One short night is fine. Sleeping in moves your body clock and makes the next night harder. That's how one bad night turns into a bad week.
How long does it take to reset a sleep schedule?
Most people notice a difference in one to two weeks of holding the same wake time, with steadier sleepiness at night and easier mornings.