Deep sleep (slow-wave sleep, stage N3) is the quarter of the night when the brain's waves are slowest, you are hardest to wake, and the body does its maintenance: growth hormone is released and repairs muscles and tissue, the immune system builds memory cells, blood pressure drops, and the brain's "rinsing system" (the glymphatic system) flushes out the day's waste products. Adults need about 1–2 hours of deep sleep a night, mostly in the first half of the night, and the proportion naturally decreases with age. Deep sleep is governed by how long you have been awake and how active you have been (sleep pressure), by the circadian rhythm (light, timing) and by body temperature, and it is stolen by alcohol, caffeine, late food, stress and interruptions. As important as the amount is waking without pain: sleeping position decides whether neck, back, shoulders and hips get to rest or are loaded for eight hours, and the right pillow matters more than the right mattress. Static cupping in the evening is one of the simplest ways to get the body to shift down before the night. Here is how to get more deep sleep, the best sleeping position for your problems, pillow and mattress, and the evening routine.
Deep sleep: what increases it and what steals it
| Increases deep sleep | Steals deep sleep |
|---|---|
| A fixed wake-up time every day, weekends included; the circadian rhythm is set by when you get up, not when you go to bed | Irregular times, sleeping in more than an hour at the weekend ("social jetlag") |
| Daylight in the first hour after waking, 20–30 minutes outside | Screens and bright light in the last hour, indoors all day |
| Physical activity during the day, especially cardio and strength; more training gives more deep sleep the same night | Hard training within two hours of bed (raises pulse and temperature) |
| A warm bath or shower 1–2 hours before bed; the body cools afterwards, which triggers sleep | A bedroom that is too warm (over 19–20 degrees), a thick duvet, warm clothes |
| A cool, dark and quiet bedroom, 16–19 degrees, blackout, earplugs if needed | Noise, light, pets in the bed, a snoring partner |
| Caffeine only before lunch, and in moderation | Caffeine after 1–2 pm (half-life 5–7 hours) reduces deep sleep even if you fall asleep fine |
| No alcohol or at most one glass early in the evening | Alcohol: you fall asleep faster but deep sleep in the second half of the night is halved, and you wake at three |
| A light evening meal at the latest two to three hours before bed | A large, late meal; digestion keeps the body warm and awake |
| Winding down for 30–60 minutes: dim light, breathing, stretching, cupping, a book | Work emails, news, arguments and planning in bed |
| Enough time in bed, 7–9 hours | Weekday sleep debt "caught up" later: deep sleep is partly compensated, REM and recovery are not |
Sleep trackers measure movement and pulse and guess at sleep stages; they can show trends (less deep sleep after alcohol, more after training) but the figures for individual nights are uncertain, and worrying about them disturbs sleep more than it helps. If you have had sleep problems for more than three months, snore with pauses in breathing or fall asleep during the day, read sleep problems and insomnia and seek care; sleep apnoea destroys deep sleep completely and is treatable.
The best sleeping position: depends on what hurts
| Problem | Best position | Avoid |
|---|---|---|
| Neck pain, morning headache | Back with a low to medium pillow that fills the curve of the neck, or side with a pillow that keeps the head in line with the spine (shoulder-width height). See neck pain | Front (head turned 90 degrees all night), two pillows on the back, arm under the pillow |
| Low back pain | Back with a pillow under the knees, or side with a pillow between the knees (keeps the pelvis level); a lightly curled fetal position with a herniated disc and spinal stenosis. See low back pain | Front without a pillow under the hips, side with the top leg pulled far forward (twists the lower back) |
| Sciatica | Side with the painful leg on top and a pillow between the knees, or back with a pillow under the knees | Lying on the painful side, front |
| Shoulder pain, impingement, frozen shoulder | Back with a small pillow under the upper arm so the shoulder doesn't fall back, or on the good side with a pillow in front of the chest to rest the painful arm on. See shoulder pain | Lying on the painful shoulder, arm overhead, arm under the pillow |
| Hip pain, trochanteric bursitis | Back, or side on the good hip with a thick pillow between the knees so the top leg is in line; a softer mattress or topper. See trochanteric bursitis | Lying on the painful hip, a hard mattress, top leg hanging forward |
| Knee pain | A pillow between the knees in side-lying (with pes anserinus and osteoarthritis), under the knees on the back | Knees against each other, a bent knee under the body |
| Numb hands and arms | Back or side with the arms along the body, wrists straight (a night splint for carpal tunnel), elbow not bent more than 90 degrees. See numb hands | Arm under the pillow or overhead, bent wrist, lying on the arm |
| Reflux, heartburn | Left side (the stomach sits below the oesophagus), or the head end raised 10–15 cm (blocks under the bed legs, not more pillows) | Right side, flat on the back, front |
| Snoring, mild sleep apnoea | Side (a tennis ball in the back of the pyjamas or a positional pillow), head end slightly raised | Back; alcohol and sleeping pills make it worse |
| Pregnant | Left side with a pillow between the knees and under the belly from the second trimester. See swollen feet in pregnancy | Flat on the back late in pregnancy (presses on the large vein), front |
| Swollen legs, varicose veins | Foot end raised a few centimetres, feet above heart level for a while before sleep. See varicose veins | Legs crossed, knees bent hard all night |
| Wrinkles and a puffy face | Back, head slightly raised; a silk pillowcase in side-lying. See puffy face | Front with the face in the pillow, always the same side |
No position is "wrong" if you wake without pain; the body changes position 20–40 times a night and should. The goal is that the position you fall asleep in, and the one you most often wake in, keeps the spine in a straight line from neck to tailbone.
Pillow and mattress: what actually matters
- Pillow height matters more than material: on the side it should fill the distance between ear and shoulder so the neck is straight (broader shoulders, higher pillow); on the back it should be lower and support the curve of the neck without pushing the head forward. Test: lie down and have someone look from the side; the nose should point straight ahead, not up or down.
- Shape: a pillow with a lower middle and higher edges, or a mouldable one (down, shredded foam, buckwheat) you can bunch up under the neck, suits most people with neck problems. Replace the pillow every two to three years; a flat, collapsed pillow is the most common cause of a stiff neck in the morning.
- Mattress: medium-firm is best for most people with back problems in studies, not hard; for side sleepers with hip and shoulder problems somewhat softer or a topper that lets shoulder and hip sink in. A mattress older than eight to ten years with a dip in the middle should be replaced.
- Knee pillow: the cheapest thing that makes the biggest difference for side sleepers with back, hip or knee problems; an ordinary pillow works, a shaped one stays in place.
- Duvet and temperature: a weighted blanket (about 10 per cent of body weight) helps many with anxiety to fall asleep and sleep more deeply; a cool room and warm feet (socks) make you fall asleep faster.
Yoga nidra and sleep meditation: guided rest that deepens sleep
Yoga nidra ("yogic sleep") is a guided, lying-down relaxation of 15–40 minutes in which a voice leads the attention systematically through the body, the breath and simple images while you lie completely still on your back. The brain drops into the slow waves that resemble early sleep without you falling asleep, and studies on healthcare staff, students and people with sleep problems among others show lower stress, less worry, faster sleep onset and better sleep quality after a few weeks of daily use; 20 minutes in the middle of the day is described by many as as restorative as a nap without disturbing night sleep. Sleep meditation and body scanning are simpler variants of the same thing: a voice that moves the attention from the toes to the crown with the instruction to notice and release tension, with no requirement to fall asleep; progressive relaxation tenses and releases each muscle group in turn and suits anyone who finds it hard to feel the difference between tense and relaxed. How to use them: choose a recording of 15–20 minutes (apps, free online, or the cupping programme for body scanning), lie on your back with a pillow under the knees and a blanket, ideally straight after the static cupping in the evening routine below when the body is already heavy, and let the voice do the work; if you fall asleep before the end, it has worked. In the middle of the day: set an alarm so the rest is 20 minutes, not two hours. Yoga nidra is not a treatment for insomnia (where CBT-i applies, see sleep problems and insomnia), but one of the best tools for lowering the revs, and safe for everyone, including pregnant women and anyone who is exhausted (exhaustion disorder).
A 20-minute evening routine that deepens sleep
- An hour before: dim the lights, screens away or in night mode, the last fluids, prepare tomorrow on a note so the brain can let it go.
- A warm shower or foot bath (5 minutes): warms the skin so the body's core temperature then drops, which is the signal for sleep.
- Static cupping (8 minutes): two static cups either side of the spine between the shoulder blades or on the upper trapezius, light suction, lying on your front or sitting leaning forward in dim light; most people feel the shoulders drop within a couple of minutes. With a tense neck also the dynamic cup with oil in slow strokes from the neck out over the shoulders, 1 minute per side. The full approach is in sleep problems and the cupping programme for relaxation.
- Light stretching (3 minutes) of hip flexors, chest and neck, so you don't go to bed with the day's posture; see stiff body.
- Breathing in bed (4 minutes): four seconds in through the nose, six to eight out, hand on the belly, in the sleeping position that suits your problems; see breathing exercises.
Don't cup with a fever, over damaged skin or if you take blood thinners without having asked your doctor; more situations in when to avoid cupping.
Frequently asked questions
How much deep sleep do you need?
Adults about 1–2 hours a night, 15–25 per cent of sleep, mostly in the first half of the night; the proportion decreases with age. You get more of it through a fixed wake-up time, morning daylight, daytime movement, a warm bath before bed and a cool bedroom, and less through alcohol, caffeine after lunch, late food and stress. Sleep tracker figures are approximate.
What is the best sleeping position?
The one that keeps the spine straight from neck to tailbone and that you wake from without pain: back with a pillow under the knees or side with a pillow between the knees works for most. With shoulder or hip pain: not on the painful side; with reflux: left side or a raised head end; in pregnancy: left side; lying on the front is worst for neck and lower back.
What should the pillow be like if you have neck pain?
High enough that the neck is straight: on the side it should fill the distance between ear and shoulder, on the back be lower and support the curve of the neck without pushing the head forward. Mouldable pillows (down, shredded foam, buckwheat) or pillows with a lower middle suit most. Replace every two to three years; a flat pillow is the most common cause of a stiff neck in the morning.
Why do I wake at three in the morning?
Most often alcohol in the evening (deep sleep is halved in the second half of the night), stress with raised cortisol, a bedroom that is too warm, late food, or going to bed too early for your rhythm. Get up for a while in dim light if you don't fall back asleep within 20 minutes; don't lie there counting hours.
Does cupping help you sleep better?
Static cupping on the upper back and shoulders for 5–8 minutes in the evening lowers the tension in the muscles that keep the body on alert and helps many fall asleep faster and sleep more deeply, especially together with a warm shower, dim light and slow breathing. It doesn't cure insomnia, which is treated with CBT for insomnia, but is a good way to lower the revs.
Related guides
- The diaphragm – tight diaphragm, belly breathing and cupping
- Snoring and sleep apnoea – causes, how to stop snoring and when to get tested
- Hip pain at night – causes, sleeping position, exercises and cupping
- Sleep deprivation – symptoms, what happens in the body and how to catch up
- Back pain in the morning – why, mattress, sleeping position and exercises
Written by Curam. Last updated 17 October 2026. This is general self-care information and does not replace medical care. For sudden, severe or unusual symptoms, contact your doctor. Talk to your doctor before cupping if you are pregnant, take blood thinners or have a condition affecting skin, blood vessels or blood.
