The research behind your plan
Every quote on this page is word for word from a public source, and every source is linked. The people and organisations quoted haven't reviewed or endorsed Better Today. They're here because your plan is built from the same research they teach.
How your plan uses the research
Your plan is written from a library of 61 references: the trials and guidelines behind each thing it asks you to do. Every claim in your plan carries the number of the reference it came from, with the study, how many people were in it, how long it ran, and a link. Each one is graded from A to D, so you can see whether the advice rests on large repeated trials or on one small study.
The quotes below are not that library. They're public statements by the scientists and health bodies whose work the library draws on, collected so you can hear the same advice in their words. Each group is the part of your plan it speaks to.
Better Today's plan draws on the research these scientists teach. They have not reviewed or endorsed it.
In their words, by topic
CBT-I, the method sleep clinics use
The sleep window, the fixed wake time and the twenty-minute rule at 3am are the working parts of CBT-I. They're the spine of most plans. Where your answers say a sleep window isn't safe for you, the plan leaves it out and says why.
“The AASM recommends clinicians use cognitive behavioral therapy for insomnia (CBT-I) as first-line treatment for chronic insomnia in adults.”
American Academy of Sleep Medicine, Professional society for sleep medicine (U.S.). Digital Cognitive Behavioral Therapy for Insomnia: Platforms and Characteristics, opens in a new tab, 6 March 2024. “Cognitive behavioral therapy for insomnia, known as CBT-I, is the recommended first-line treatment for insomnia.”
Daniel Buysse, MD, Distinguished Professor of Psychiatry, University of Pittsburgh School of Medicine. Spotlight: Management of Insomnia with Daniel Buysse, MD, opens in a new tab, 20 August 2024.
A fixed wake time
The one number in your plan that doesn't move. Where your plan has a sleep window, it's worked out backwards from this.
“Wake up at the same time each day and go to sleep when you first start to feel sleepy.”
Andrew Huberman, PhD, Associate Professor of Neurobiology, Stanford School of Medicine. Toolkit for Sleep (Huberman Lab newsletter), opens in a new tab, 20 September 2021. “Keep your wake-up time consistent from day to day, but listen to your body's changing needs.”
Jade Wu, PhD, Behavioral Sleep Medicine Specialist; author, Hello Sleep. Excerpt of "Hello Sleep" by Dr. Jade Wu, opens in a new tab, 7 February 2023.
The same time every day
Your plan asks for one wake time, seven days a week, and builds the rest of the schedule around it.
“Go to bed at the same time, wake up at the same time, no matter whether it's the weekday or the weekend. Regularity is king.”
Matthew Walker, PhD, Professor of Neuroscience and Psychology, UC Berkeley; author, Why We Sleep. Sleep is your superpower (TED Talk transcript), opens in a new tab, 10 May 2019. “Because sleep is not a voluntary process, going to bed early, before you're sleepy, leads to a vicious cycle of sleeplessness.”
Daniel Buysse, MD, Distinguished Professor of Psychiatry, University of Pittsburgh School of Medicine. Spotlight: Management of Insomnia with Daniel Buysse, MD, opens in a new tab, 20 August 2024. “Consistency and timing have more impact than the number of hours.”
Charles Czeisler, MD, PhD, Baldino Professor of Sleep Medicine, Harvard Medical School. Q&A: Dr. Charles Czeisler, opens in a new tab, 1 June 2016.
Morning light
Where it's safe for you, your plan gives you a time to get outside in the first hour after waking.
“View sunlight by going outside within 30-60 minutes of waking. Do that again in the late afternoon, prior to sunset.”
Andrew Huberman, PhD, Associate Professor of Neurobiology, Stanford School of Medicine. Toolkit for Sleep (Huberman Lab newsletter), opens in a new tab, 20 September 2021. “If you have a regular schedule of light and dark exposure, your internal clock is in sync with your environment.”
Charles Czeisler, MD, PhD, Baldino Professor of Sleep Medicine, Harvard Medical School. Q&A: Dr. Charles Czeisler, opens in a new tab, 1 June 2016.
Screens and evening light
Your plan sets a screens-off time and a lights-down time, worked out from your own bedtime.
“The blue light from screens can make it harder to fall asleep.”
NHS, Every Mind Matters, National Health Service (UK). How to fall asleep faster and sleep better, opens in a new tab. “Avoid viewing bright lights—especially bright overhead lights between 10 pm and 4 am.”
Andrew Huberman, PhD, Associate Professor of Neurobiology, Stanford School of Medicine. Toolkit for Sleep (Huberman Lab newsletter), opens in a new tab, 20 September 2021.
A cool, dark room
Your room page is written for heat and no aircon: the cold water bottle, the fan, and how to cool a room without leaving a window open. If your area still gets power cuts, it covers those nights too. Nothing you have to buy.
“You may find it easier to sleep in a room that is quiet, dark and cool.”
NHS, Every Mind Matters, National Health Service (UK). How to fall asleep faster and sleep better, opens in a new tab. “You need to warm up to cool down to fall asleep, and then you need to stay cool to stay asleep.”
Matthew Walker, PhD, Professor of Neuroscience and Psychology, UC Berkeley; author, Why We Sleep. The Tim Ferriss Show Transcripts: Dr. Matthew Walker, All Things Sleep (#650), opens in a new tab, 21 January 2023. “Your body needs to drop in temperature by 1-3 degrees to fall and stay asleep effectively.”
Andrew Huberman, PhD, Associate Professor of Neurobiology, Stanford School of Medicine. Toolkit for Sleep (Huberman Lab newsletter), opens in a new tab, 20 September 2021.
Caffeine timing
Your last-coffee time is worked out from your own bedtime and window, not from a rule about lunch.
“Avoid caffeine within 8-10 hours of bedtime.”
Andrew Huberman, PhD, Associate Professor of Neurobiology, Stanford School of Medicine. Toolkit for Sleep (Huberman Lab newsletter), opens in a new tab, 20 September 2021. “Because it's a stimulant, caffeine can keep you wired even when you want to rest, so try to avoid it later in the day.”
Sleep Foundation, SleepFoundation.org, a consumer sleep-health site. Sleep Hygiene, opens in a new tab, 7 July 2025.
Alcohol
Your last-drink time sits on the same page as the coffee cut-off, if you told us you drink.
“Alcohol may make it easier to fall asleep, but the effect wears off, disrupting sleep later in the night.”
Sleep Foundation, SleepFoundation.org, a consumer sleep-health site. Sleep Hygiene, opens in a new tab, 7 July 2025. “Avoid alcohol in the evenings.”
Harvard Health Publishing, Consumer health publishing division of Harvard Medical School. Sleep hygiene: Simple practices for better rest, opens in a new tab, 31 January 2025. “Alcohol and nicotine can also have disruptive effects on sleep, so try to avoid them 1 to 2 hours before bed.”
NHS, Every Mind Matters, National Health Service (UK). How to fall asleep faster and sleep better, opens in a new tab.
Naps
If you nap, the plan says how long and how early, or when to try a week without.
“Limit daytime naps to less than 90 min, or don't nap at all.”
Andrew Huberman, PhD, Associate Professor of Neurobiology, Stanford School of Medicine. Toolkit for Sleep (Huberman Lab newsletter), opens in a new tab, 20 September 2021. “Try to keep naps relatively short and limited to the early afternoon.”
Sleep Foundation, SleepFoundation.org, a consumer sleep-health site. Sleep Hygiene, opens in a new tab, 7 July 2025. “Research suggests 10 to 20 minutes is the ideal length for a power nap.”
Michael Breus, PhD, Clinical Psychologist, Diplomate of the American Board of Sleep Medicine. How Long Should a Power Nap Be for Energy and Focus?, opens in a new tab, 22 January 2024.
Exercise
If you train late, the plan moves it earlier. If you don't move much, it gives you a starting dose.
“Exercise always wins out in terms of generating that more and greater and more powerful deep sleep.”
Matthew Walker, PhD, Professor of Neuroscience and Psychology, UC Berkeley; author, Why We Sleep. The Tim Ferriss Show Transcripts: Dr. Matthew Walker, All Things Sleep (#650), opens in a new tab, 21 January 2023. “Studies have found that proper exercise can alleviate sleep-related problems and help you get an adequate amount of rest.”
Sleep Foundation, SleepFoundation.org, a consumer sleep-health site. How Can Exercise Affect Sleep?, opens in a new tab, 29 July 2025. “For many people, exercising within two hours of bedtime interferes with falling asleep.”
Harvard Health Publishing, Consumer health publishing division of Harvard Medical School. Sleep hygiene: Simple practices for better rest, opens in a new tab, 31 January 2025.
Stress and the 2am head
The worry-time technique, and what to do with the thoughts that arrive at 2am, if that's your pattern.
“Elevated stress levels have also been shown to influence the structural organization of sleep, including the duration of each sleep stage.”
Sleep Foundation, SleepFoundation.org, a consumer sleep-health site. Stress and Insomnia: How Stress Affects Sleep, opens in a new tab, 3 August 2026.
Why it's worth the effort
Week 1 is the hardest, and the plan says so. These are for the nights you wonder whether it's worth it.
“Sleep is a nonnegotiable biological necessity.”
Matthew Walker, PhD, Professor of Neuroscience and Psychology, UC Berkeley; author, Why We Sleep. Sleep is your superpower (TED Talk transcript), opens in a new tab, 10 May 2019. “Sleep is THE foundation of our mental and physical health and performance in all endeavors.”
Andrew Huberman, PhD, Associate Professor of Neurobiology, Stanford School of Medicine. Toolkit for Sleep (Huberman Lab newsletter), opens in a new tab, 20 September 2021. “Sleep is not a luxury - it's one of the most fundamental biological processes we have.”
Colin Espie, PhD, Professor of Sleep Medicine, University of Oxford; co-founder, Sleepio. World Sleep Day 2026: An Interview with Professor Colin Espie, opens in a new tab, 13 March 2026.