Sleep is the part of health most people are willing to trade away, and the part that quietly affects everything else: mood, concentration, appetite, blood pressure, how the body handles sugar, and how well it fights off the virus going around the office. Most people do not need a sleep clinic. They need a few habits, kept consistently, and a clear idea of when poor sleep is a symptom rather than a lifestyle.
What sleep does for you
During sleep the brain files the day, the body repairs tissue, and the hormones that govern appetite and stress settle. After a short night, most people eat more, especially sweet and salty food, react more strongly to small frustrations, and make slower decisions. Over months, short sleep is linked with higher blood pressure and with less stable blood sugar. None of that is a reason for alarm after one bad night; it is a reason to treat sleep as part of health rather than as spare time.
Adults generally need somewhere between seven and nine hours. Children and teenagers need more, and teenagers naturally fall asleep later, which school timetables rarely allow for.
The habits that matter most
Sleep responds to routine. These habits do most of the work, and they are listed in order of how much they help:
- Wake at the same time every day, including weekends. The body clock sets itself by the morning, not the evening. A late lie-in on Friday is why Saturday night is hard.
- Get daylight early. Ten minutes outside, or by a bright window, soon after waking tells the body clock the day has started.
- Keep the evening dim. Lower the lights an hour before bed. Phones and tablets are fine earlier in the evening; in bed, they keep the brain in daytime mode.
- Make the bedroom cool, dark and quiet. Air conditioning set a little lower than the rest of the house, blackout curtains, and the phone charging somewhere else.
- Stop caffeine by mid-afternoon. It lingers for hours. That includes tea, energy drinks and some soft drinks, not only coffee.
- Keep large meals and vigorous exercise to earlier in the evening. A light snack is fine. A heavy meal at midnight is not.
- Use the bed for sleep. If you are awake for more than twenty minutes, get up, do something dull in dim light, and return when sleepy. Lying in bed worrying teaches the brain that bed is where worrying happens.
Shift work, travel and Ramadan
Some disruption is unavoidable. The same principles apply, adapted: protect the sleep you can get, keep the bedroom dark whatever the hour, and be strict about caffeine timing relative to your sleep rather than to the clock. During Ramadan, many people find it easier to split sleep into a longer block after the dawn meal and a short rest in the afternoon, and to move exercise to before iftar or later in the evening. Keep the daytime nap short so the night block stays intact.
Melatonin and sleeping tablets have a place for short periods, such as a few days of jet lag, but they are a poor substitute for routine and should be discussed with a doctor or pharmacist rather than bought on habit.
People come in asking for something to help them sleep, and leave with an alarm clock. A fixed wake-up time for two weeks does more than any tablet I can prescribe.
When poor sleep is a symptom
See a doctor if any of these apply, because they point to something the habits above will not fix on their own:
- Loud snoring with pauses in breathing, gasping, or waking with a headache and a dry mouth. This can be sleep apnoea, which is treatable and worth treating.
- Sleepiness that affects your day: dozing in meetings, or, far more seriously, at the wheel.
- Insomnia for more than a month despite a consistent routine. A structured programme, often delivered over a few visits, works well for most people.
- Restless, crawling sensations in the legs at night that improve with movement.
- Low mood or anxiety alongside the poor sleep. The two feed each other, and treating one helps the other.
- A child who snores, breathes through the mouth at night, or is unusually difficult to wake.
A sleep problem is a health problem, and it deserves the same unhurried visit as any other.
This article is general information, not medical advice. For your own situation, talk to a doctor.