Adults need 7–9 hours of sleep per night (NIH recommendation). Blue light from screens suppresses melatonin by up to 50%, delaying sleep onset by 90+ minutes. Here are 11 science-backed tips to improve your sleep quality tonight.
11 Proven Tips for Better Sleep
1. Fix Your Sleep Schedule
Go to bed and wake up at the same time every day — including weekends. This sets your circadian rhythm, the body’s internal 24-hour clock regulated by the suprachiasmatic nucleus (SCN) in the brain.
2. Keep Your Room Cool
Optimal sleep temperature: 18–20°C (65–68°F). Your core body temperature drops 1–2°C at sleep onset. A cooler room helps this process. In Indian summers, set AC to 20–22°C.
3. No Screens 60 Minutes Before Bed
Blue light (450–490nm wavelength) from phones, tablets, and laptops suppresses melatonin production by 50% for up to 3 hours. Use Night Mode or blue light glasses if avoidance is difficult.
4. Avoid Caffeine After 2 PM
Caffeine has a half-life of 5–7 hours. A cup of chai at 4 PM still has 50% caffeine active at 10 PM. Includes: coffee, tea, cola drinks, energy drinks, dark chocolate.
5. No Heavy Meals Within 3 Hours of Bedtime
Digestion raises core body temperature, counteracting sleep onset. GERD/acid reflux worsens when lying down after eating. Light snacks (banana, warm milk, walnuts) are fine 1 hour before bed.
6. Get Morning Sunlight (10–30 Minutes)
Morning light sets your circadian clock. Cortisol rises naturally with sunlight, boosting alertness. This also ensures melatonin releases at the right time at night — 12–14 hours after morning light exposure.
7. Exercise Regularly — But Not After 6 PM
150 min/week moderate exercise improves sleep quality by 65% (Sleep Foundation). However, vigorous exercise within 3 hours of bedtime raises cortisol and body temperature, delaying sleep.
8. Make Your Room Dark
Even small amounts of light (from street lamps, phone chargers, TV standby) reduce melatonin. Use blackout curtains or a sleep mask. Cover all LED indicators in your room.
9. Limit Alcohol
Alcohol may help you fall asleep faster but it suppresses REM sleep — the restorative stage. You wake up groggy even after 8 hours. Effects are dose-dependent: even 1–2 drinks reduce REM by 20%.
10. Try 4-7-8 Breathing
Inhale for 4 seconds, hold for 7 seconds, exhale for 8 seconds. Repeat 3–4 times. This activates the parasympathetic nervous system, reducing heart rate and stress hormones within minutes.
11. Reserve Your Bed Only for Sleep
Avoid working, watching TV, or scrolling in bed. This is called stimulus control therapy — your brain should associate bed with sleep, not wakefulness. If you can’t sleep after 20 minutes, get up and do something calm.
Sleep Requirements by Age (NIH)
| Age Group | Recommended Hours |
|---|---|
| Teens (14–17) | 8–10 hours |
| Young Adults (18–25) | 7–9 hours |
| Adults (26–64) | 7–9 hours |
| Older Adults (65+) | 7–8 hours |
Source: National Institutes of Health (NIH), American Academy of Sleep Medicine, Sleep Foundation. Last verified: September 2026.
