Quick answer: Deep, consistent sleep is when your body repairs tissue, balances hormones, clears brain waste and calms inflammation. Seven habits make the biggest difference: managing stress, getting morning sunlight, a screen curfew before bed, exercising earlier in the day, finishing meals a few hours before bed, a cool dark bedroom, and the same sleep and wake time every day.
Key takeaways
Deep sleep is when the body repairs tissue, balances hormones and clears waste from the brain.
The article lists seven habits, from managing stress and getting morning light to setting a screen curfew and timing meals.
A cool, dark bedroom and the same sleep and wake time every day are often the simplest changes to make.
Why sleep matters for longevity
During deep sleep, the brain appears to clear waste more efficiently (see the glymphatic system), cortisol reaches its low point, melatonin and growth hormone rise, and the body repairs tissues and calms inflammation.
7 habits for deeper sleep
1. Manage stress
Chronic stress raises cortisol and suppresses melatonin. Journaling, breathwork and time outside help (see breathwork).
2. Get morning sunlight
Ten to 30 minutes outdoors within an hour of waking sets your body clock, even on cloudy days.
3. Set a screen curfew
Avoid screens for one to two hours before bed, or use night mode and dim lighting.
4. Exercise earlier in the day
Morning or early-afternoon workouts improve sleep quality.
5. Time your meals
Finish eating a few hours before bed and limit alcohol, which disrupts sleep later in the night.
6. Optimize your bedroom
Keep it cool, completely dark and quiet. Use blackout curtains and earplugs or white noise if needed.
7. Keep a consistent routine
Go to bed and wake at the same times every day, including weekends, and build a calming wind-down routine.
For supplement options, see natural sleep aids.
Sleep and healthy aging
Sleep supports autophagy, DNA repair, mitochondrial function and hormone signaling, and poor sleep is linked with higher markers of inflammation. Short or poor sleep is linked with faster biological aging.
When to see a naturopathic doctor
It may be time to see a naturopathic doctor if you have had trouble falling or staying asleep for more than a few weeks, or if you wake unrefreshed. The same is true if your sleep changed with perimenopause or stress, or if you want a personalized sleep plan.
See a medical provider promptly for loud snoring with breathing pauses, gasping at night, or falling asleep while driving.
Ready for deeper, more restorative sleep?
A free 15-minute consultation with Dr. Kneessi. No cost, no obligation. In-office in Odenton, MD or by telehealth.
Questions to bring to your clinician
These questions can help you get the most out of your next visit.
Which of these sleep habits would make the biggest difference for my sleep pattern?
Could any of my current medications or supplements interact with the options discussed here?
Would any lab testing add useful information in my situation, or is it reasonable to start with daily habits?
Which one or two changes would be most worthwhile for me to focus on first?
Frequently asked questions
How many hours of sleep do adults need?
Most adults need seven to nine hours.
Does morning sunlight really help sleep?
Yes. Morning light helps set your circadian rhythm, which improves sleep at night.
What temperature is best for sleep?
A cool room, around the mid-60s Fahrenheit, works well for most people.
Does alcohol help sleep?
It may help you fall asleep faster, but it disrupts sleep and reduces REM sleep later in the night.
Sources
- Xie L, et al. Sleep drives metabolite clearance from the adult brain. Science 2013. PMID: 24136970. https://pmc.ncbi.nlm.nih.gov/articles/PMC3880190/
- Chang AM, et al. Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness. Proc Natl Acad Sci U S A 2015. PMID: 25535358. https://pmc.ncbi.nlm.nih.gov/articles/PMC4313820/
- Ebrahim IO, et al. Alcohol and sleep I: effects on normal sleep. Alcohol Clin Exp Res 2013. PMID: 23347102. https://pubmed.ncbi.nlm.nih.gov/23347102/
- Irwin MR, Olmstead R, Carroll JE. Sleep Disturbance, Sleep Duration, and Inflammation: A Systematic Review and Meta-Analysis of Cohort Studies and Experimental Sleep Deprivation. Biol Psychiatry 2016. PMID: 26140821. https://pmc.ncbi.nlm.nih.gov/articles/PMC4666828/
- Carroll JE, et al. Partial sleep deprivation activates the DNA damage response (DDR) and the senescence-associated secretory phenotype (SASP) in aged adult humans. Brain Behav Immun 2016. PMID: 26336034. https://pmc.ncbi.nlm.nih.gov/articles/PMC4679552/
- NHLBI: How Sleep Works
- MedlinePlus: Healthy Sleep
This article is for educational purposes only and is not medical advice. It does not replace an individual evaluation. Talk with your healthcare provider before starting supplements or changing medications, especially if you are pregnant, nursing, or managing a health condition.
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