Learn Sleep
Why sleep matters
Sleep is active care for your brain and body.
During sleep, the brain and body remain busy. Healthy sleep supports attention and memory, mood, immune function, metabolism, tissue repair, and cardiovascular health. Consistently good sleep also helps you feel alert enough to work, learn, drive, and enjoy the day safely.
Sources: CDC: About Sleep and NIH MedlinePlus: Healthy Sleep. The 2024 U.S. statistic is from the CDC/NCHS Data Brief.
Your sleep target
How much sleep do you need?
Needs vary by age, health, and individual circumstances. These daily ranges are a practical starting point—not a scorecard.
Build a better night
Six habits with real staying power
Choose a consistent bedtime and wake time, including weekends when possible.
A quiet, dark, comfortably cool bedroom helps protect uninterrupted sleep.
Turn off electronic devices at least 30 minutes before bedtime.
Avoid caffeine in the afternoon or evening, and large meals and alcohol near bedtime.
Regular physical activity and daylight exposure can support your sleep-wake rhythm.
A simple sleep diary can reveal patterns worth discussing with a healthcare professional.
Adapted from public guidance from the CDC and NIH MedlinePlus.
Your sleep surface
A good mattress is personal, not universal.
Comfort, pressure relief, support, temperature, motion, and ease of movement all affect how a bed feels. Research reviews often find favorable results for medium-firm or self-adjusted surfaces, but studies also show meaningful person-to-person differences. Your body, sleep position, health needs, and preferences matter.
Read the systematic review on PubMed →Ask these five questions
- Do you feel supported without uncomfortable pressure?
- Can your shoulders and hips settle naturally in your usual position?
- Do you wake with new or worsening stiffness?
- Does heat or partner movement regularly disturb you?
- Is the mattress visibly sagging, damaged, or no longer comfortable?
A mattress is not a medical treatment. Persistent pain or sleep problems deserve evaluation by a qualified healthcare professional.
Free, trustworthy resources
Download. Read. Put it into practice.
These resources come from U.S. public-health agencies and medical research databases. They are free to access and useful well beyond a single shopping trip.
Your Guide to Healthy Sleep
A science-based guide to sleep stages, habits, myths, disorders, shift work, jet lag, and drowsy driving.
Download the guide → Free printable · NIH/NHLBIOne-Page Sleep Diary
Track sleep timing and quality, daytime sleepiness, caffeine, alcohol, medicines, and exercise.
Download the diary → Free two-page PDF · NIH/NHLBISleep Brochure
A quick explanation of sleep needed to feel awake versus sleep needed to support health.
Get the brochure → Reference hub · NIHHealthy Sleep at MedlinePlus
Clear guidance on sleep stages, recommended hours, better habits, and when to seek professional help.
Explore the hub → Public-health guide · CDCAbout Sleep
Age-based recommendations, health benefits, signs of poor sleep quality, and practical sleep habits.
Read at CDC.gov → Open-access research · PubMed CentralMattress & Sleep Study
Read a 2024 open-access study examining mattress effects on sleep quality, pain, fatigue, mood, and activity.
Read the full study →When your sleep surface is part of the problem
Find support that feels right for you.
Explore mattresses by size, construction, and comfort—or visit Mattress Central for help comparing options without the guesswork.
Explore all mattresses