r/Habits • u/KygoApp • 17h ago
Habits that help you fall asleep faster (research based)
I’ve gone through more studies on sleep latency than I’d like to admit, and it changed my understanding of which habits affect how fast people fall asleep.
Most of the general advice I’ve heard is about what you do once you’re already in bed: relax, stop thinking, count sheep, etc. Yet most of the research points to the few hours before bed. So here’s my condensed list from the studies, keeping only the habits you can change, ordered by how much they moved that number. Links for all sources at the bottom.
These moved the number most:
1. Use your bed only for sleep. Training the brain that bed means sleep (no scrolling, TV or work in bed) gave one of the largest effects on falling asleep in a meta-analysis of 11 trials.
2. Take a warm bath or shower 1 to 2 hours before bed. Water around 104 to 108°F (40 to 42.5°C) for as little as 10 minutes cut about 10 minutes off falling asleep in a meta analysis.
3. Write tomorrow's todo list. In a sleep lab study, 5 minutes writing a todo list before bed got people asleep in 15.8 min vs 25.1 min for those who wrote about tasks they'd already finished.
4. Cut back on caffeine. Caffeine added about 9 minutes to falling asleep across a 24 study meta analysis. Cutting the amount may matter more than just moving it to the morning.
5. Exercise regularly. A meta analysis across 66 studies found regular exercise shortened the time to fall asleep. Evening workouts are fine except for the last hour before bed, that's the one window where it may delay sleep.
Often overlooked:
6. Lights/screens in the last hours before bed. The more melatonin suppressing light people got in the evening, the longer they took to fall asleep. Putting devices away 2 hours before bed cut about 6 minutes in one sleep lab study.
7. Earplugs and an eye mask. In a noisy, bright room, people fell asleep in 46.6 min vs 71.4 min without. Even at home, each extra decibel of bedroom noise was linked to slower sleep onset in older adults.
8. Wear socks to bed if your room is cool. Bed socks got people asleep about 7.5 minutes sooner in a small study, and gently warming the skin cut about 3 minutes in another.
9. Fresh air. In a 54 day chamber study, the time to fall asleep rose steadily as bedroom CO2 went up.
10. Carbs at dinner. A high card rice dinner 4 hours before bed got people asleep about 8 minutes faster. The same meal 1 hour before bed helped less.
Smaller wins and a couple of myths:
12. Yoga or Tai Chi. A regular practice cut about 25 to 29 minutes off falling asleep (self reported), but the evidence is rated low certainty so the real effect is probably smaller.
13. Mindfulness. A regular practice trimmed about 8 minutes off falling asleep when measured objectively.
14. Skip the nightcap. Alcohol only got people to sleep meaningfully faster at around 5 drinks, and it disrupted REM even at low doses. Not a trade worth making.
15. Music at bedtime. People said falling asleep felt easier, but objective measures didn't show a change.
16. Smoking. Current smokers took about 5 minutes longer to fall asleep than never smokers. Former smokers were no different.
Supplements:
General research from supplements too if interested
- Melatonin cut about 7 minutes in people with sleep disorders. The benefit peaked around 4 mg, taken about 3 hours before bed
- Magnesium cut about 17 minutes in older adults, but only 3 small trials and low certainty
- Ashwagandha shortened sleep onset, most clearly in people with insomnia
- L-theanine made people feel like they fell asleep faster, with no measured change
- Valerian, fish oil, probiotics and CBD showed no effect
Sources:
- https://www.kygo.app/tools/sleep-latency-factors This is the complete guide I created from the research. It's completely free so anyone can access it and links to all studies used to create it
- Bed only for sleep: Jansson-Fröjmark 2023, J Sleep Research, 11 trials
- Bath before bed: Haghayegh 2019, Sleep Med Rev
- Todo list: Scullin 2017, J Experimental Psychology
- Caffeine: Gardiner 2023, Sleep Med Rev, 24 studies
- Exercise: Kredlow 2015, J Behavioral Medicine, 66 studies
- Exercise close to bed: Stutz 2019, Sports Medicine, 23 studies
- Light: Cajochen 2022, Lighting Research & Technology
- Phones: Lu 2025; Montanari 2026
- Earplugs/eye mask: Huang 2015, Critical Care
- Noise: Yamagami 2023, SLEEP
- Bed socks: Raymann 2005; Ko 2018
- Air quality: Xu 2020, Indoor Air
- Carbs: Afaghi 2007, AJCN
- Yoga & Tai Chi: Bu 2026, BMJ EBM, network meta-analysis, 22 RCTs
- Mindfulness: Tong 2026, BMC Medicine
- Alcohol: Gardiner 2025, Sleep Med Rev, 27 studies
- Music: Jespersen 2022, Cochrane
- Smoking: Zhang 2006, Am J Epidemiology
- Melatonin: Ferracioli-Oda 2013, PLoS ONE; dose: Cruz-Sanabria 2024, J Pineal Research
- Magnesium: Mah & Pitre 2021, BMC Complement Med
- Ashwagandha: Cheah 2021, PLoS ONE
- Glycine: Yamadera 2007, Sleep and Biological Rhythms
- L-Theanine: Bulman 2025, Sleep Med Rev