"I will get by on 5 hours of sleep." A classic mistake of the modern person. Sleep quality and quantity are among the most important health factors, yet many people treat sleep as "a waste of time". In reality, sleep affects hormones, the immune system, memory, mood, weight, hair, skin condition and even longevity. In this article — why sleep matters, how it affects the body, and 12 proven strategies for better sleep. This article is informational and does not replace a medical consultation.
How much sleep do you really need
Health organisations recommend:
| Age | Recommended sleep |
|---|---|
| 0–3 mo (infants) | 14–17 h/day |
| 1–2 yr | 11–14 h/day |
| 3–5 yr | 10–13 h/day |
| 6–13 yr | 9–11 h/day |
| 14–17 yr | 8–10 h/day |
| 18–64 yr (adults) | 7–9 h/day |
| 65+ yr | 7–8 h/day |
Myth: "I will survive on 5 hours." A small share (~1–3% of the population) genetically can, but for most of us — not true. Too little sleep builds up "sleep debt", and if it is not paid back the consequences accumulate.
What happens during sleep
Sleep is not "passive" time. It is an active period in which the body performs essential functions:
NREM (non-REM) phases
- Phase 1 — falling asleep (5–10 min)
- Phase 2 — light sleep (about 50% of the night)
- Phase 3 (deep sleep) — restoration, growth hormone, the immune system at work
REM phase
Rapid eye movements, dreams, memory consolidation, emotional processing.
Through the night these phases repeat in 4–6 cycles (~90 min cycle). The earlier part of the night has more deep sleep, the later part has more REM.
What poor-quality sleep affects
Hormones
- Cortisol — rises when you sleep little. More — in our article on cortisol
- Testosterone — produced by men during sleep; little sleep = low testosterone. More — in the men's energy article
- Growth hormone — also during deep sleep
- Leptin / ghrelin — satiety / hunger hormones. Little sleep = more hunger
- Insulin — resistance grows
Memory and cognitive function
Memory consolidation happens during sleep. Short sleep:
- Reduces memory by up to 40%
- Impairs decision-making
- Slows reaction time
- Reduces creativity
Immune system
One study showed that people who slept less than 6 h caught colds 4× more often after virus exposure.
Hair and skin
Restoration happens at night. Chronic lack of sleep:
- Speeds up ageing
- Damages hair follicles
- Worsens skin renewal
Weight
Short sleep is linked to:
- Increased hunger
- Cravings for sugar / high-calorie food
- Reduced metabolism
- Insulin resistance
Mood
Sleep debt = increased anxiety, risk of depression, irritability.
Modern enemies of sleep
Modern life has several factors that disturb sleep more than ever:
1. Blue light from screens
Phones, computers, TVs — all emit blue light that mimics sunlight and blocks melatonin production.
2. Artificial lighting
Bright light in the home in the evening signals to the brain that "it is still day".
3. Evening caffeine
Caffeine has a half-life of ~5–6 hours. A 2 pm coffee is still active at 10 pm.
4. Stress and constant connection
Email, news, social media — the brain does not get to rest.
5. An irregular schedule
Different sleep times on weekends and weekdays disrupt the circadian rhythm.
6. Environment
- Bedroom too warm
- Too bright
- Noisy
- Poor mattress / pillow
12 strategies for better sleep
1. A consistent sleep schedule
The same time to sleep and wake up every day — even on weekends. ±30 min variation is fine. More disrupts the rhythm.
2. Sunlight in the morning
10–30 minutes of sun in the first 1–2 hours after waking up. Regulates the circadian rhythm and melatonin production in the evening.
3. Evening darkness
2 hours before bed — dim the light:
- Dimmable bulbs
- Warm (red) lighting
- Candles — a natural alternative
4. Limiting screens
At least 1 hour before bed — no screens. If necessary — use blue-light blocking glasses or night mode.
5. A cool bedroom
16–19 °C is optimal. Too warm — disrupts sleep architecture.
6. Darkness
- Closed blackout curtains
- An eye mask if needed
- No LED indicators (cover or remove them)
7. Quiet
If the environment is noisy — ear plugs or a "white noise" machine.
8. Limiting caffeine
After 2 pm — no caffeine. For the most sensitive — after noon.
9. Evening food
- Last meal 2–3 hours before bed
- Avoid heavy or large meals
- Avoid alcohol (it disrupts sleep architecture even if it makes falling asleep easier)
- Warm milk drink with honey — a traditional helper
10. Evening routine
30–60 minutes of "preparation" for sleep:
- Warm shower / bath (the drop in body temperature after the shower promotes sleep)
- Reading (paper, not a screen)
- Breathing practices
- Light stretches
11. Stress management
Stress — sleep enemy No. 1. More — in our article on stress.
12. Physical activity
Regular activity during the day — better sleep. But:
- Intense workouts within 3 h of bedtime — disrupt sleep
- Light activity (walking, yoga) — always beneficial
Specific situations
I cannot fall asleep
If you have not fallen asleep after 20 minutes in bed:
- Get up, go to another room
- Do something gentle (reading, light stretching)
- Return to bed only when you feel sleepy
- Never "toss and turn" in bed — it should be associated only with sleep
I wake up at night
For most people — it is normal to wake briefly several times a night. The problem is when you cannot fall back asleep:
- Avoid looking at the clock
- Breathing practices (4-7-8)
- Body-scan meditation
- No screens
- If recurring — talk to a doctor
I wake up too early
Waking at 3–4 am with no chance of falling back asleep can indicate:
- A stress problem
- Hormonal swings (especially in women)
- Going to bed too early
- Deeper psychological issues
Melatonin — how to use it
Melatonin is a hormone the body produces itself. But it is also sold as a supplement. A few notes:
- Optimal dose: 0.3–3 mg (NOT 5–10 mg, which is often sold)
- Timing: 30–60 min before bed
- Suitable for: jet lag, shift work, occasional cases
- Not suitable for: daily long-term use without supervision
- Side effects: possible headaches, morning "grogginess"
Talk to your doctor.
Adaptogens in the context of sleep
Some adaptogens have a traditional use for supporting sleep:
- Ashwagandha — several studies suggest a possible effect on sleep quality. More — in our ashwagandha article
- L-theanine — an amino acid from green tea, with a calming effect
- Magnesium (glycinate form) — supports sleep
- Passionflower — a traditional calming herb
- Valerian — a traditional sleep helper
From our range — Stress Shield contains ingredients traditionally linked to stress and sleep balance. The Ashwagandha complex — a separate product with this herb. Food supplements do not diagnose, treat or prevent disease. Talk to your doctor.
When to see a specialist
A consultation is needed if:
- Sleep problems last longer than 1 month
- You feel constantly tired even after enough sleep
- Snoring with breathing pauses (possible sleep apnoea)
- You cannot fall asleep even with good rules
- Sleep problems affect work, relationships, safety
- You know that worry about sleep itself is disturbing your sleep (the insomnia loop)
Specialists:
- Family doctor (to begin with)
- Somnologist (sleep specialist)
- Psychologist / CBT-I therapist (for insomnia)
Frequently asked questions
Are 8 hours really necessary for everyone?
The average is 7–9 hours. Individual needs vary. The best testing method: spend a week without an alarm (during a holiday) and you will see your natural need.
Can sleep loss be "made up" at the weekend?
Partly — yes. But not fully. Better consistent sleep all week.
Does alcohol really disrupt sleep?
Yes. Even if it makes falling asleep easier, it disrupts REM phases. Quality sleep after alcohol — almost never.
Are sleeping pills the answer?
Short-term — possible. Long-term — no. Most sleeping pills have side effects and a risk of dependence. CBT-I (cognitive behavioural therapy for insomnia) — the first-line choice for chronic insomnia.
Shift work — can you survive it?
You can, but the health price is high. Shift work is associated with greater risk of cancer, heart disease and hormonal problems. If you have a choice — avoid it. If not — stick to the rules as strictly as possible.
Summary
Sleep quality is not a "luxury choice" — it is a foundational health factor that affects hormones, memory, the immune system, weight, hair, mood and longevity. 7–9 hours of quality sleep for most adults. Core rules: a consistent schedule, sun in the morning, evening darkness, limiting screens, a cool bedroom, controlling caffeine, an evening routine, stress management. Food supplements (ashwagandha, magnesium, melatonin) — supportive aids. If sleep problems are chronic — see a specialist. More on stress management — in the cortisol article.
This information is educational and does not replace a professional medical consultation.
