Stimulants
Caffeine keeps people awake. If you have coffee in the evening your sleep will be less restful, even if it does not keep you from falling asleep. Nicotine also keeps people awake, and smokers may take longer to fall asleep than non-smokers. Many medications have stimulants in them. These include weight loss, anti-allergy and asthma medications. Some cold remedies also have stimulants in them.
Alcohol
You may think that having a glass of wine at bedtime will help you sleep. But alcohol, while it may help you fall asleep quickly, is likely to make you wake up briefly throughout the night.
Work Hours
If you are a shift worker you are more likely to experience sleep problems. This includes workers who have changing shifts. It also includes people who work nights or early mornings. Keeping the same schedule, even on weekends, is important. It can help program your body to sleep at certain times and to stay awake at others. Waking up at the same time every morning is one way to stabilize your sleep pattern. Having a routine is important.
Exercise
You may think that resting and having a quiet lifestyle helps prevent insomnia. In fact, people who get little or no exercise may find it hard to sleep at night. Regular exercise helps people sleep better. The best time to exercise is the afternoon. Do not exercise close to bedtime. Leave at least two hours before bedtime for your heart rate to slow down after exercise.
Sleeping Pills
Sleeping pills should be used as directed by your doctor. Some sleeping pills stop working after a few weeks if they are used every night. If you stop using them suddenly, however, your sleep may be worse for a time. This problem can be reduced by cutting back slowly on the use of sleeping pills. Your healthcare professional will help you with this. Studies have recently found that after slowly stopping sleep medication, a person’s sleep may be no worse than when the individual was taking sleeping pills.
Physical/Psychiatric Illness
Many medical problems can disrupt sleep and lead people to complain that they have insomnia. Psychiatric problems, other sleep disorders and physical illnesses may change sleep in ways that can easily be mistaken for insomnia. Treating the medical disorder may treat the insomnia.
Psychiatric Problems
One kind of insomnia – waking up very early – is one of the most common complaints of people with depression. If you have a psychiatric disorder you may sleep poorly. Treatment of the underlying disorder can help improve your sleep. Some of the medications used to treat psychiatric disorders may also cause insomnia.
Sleep Related Breathing Disorders
People with sleep apnea stop breathing during sleep. This can wake a sleeper dozens or even hundreds of times a night. The time when breathing stops can be as short as 10 seconds. Most people do not remember waking up. People with sleep apnea usually breathe normally when they are awake. A sleep study is needed to diagnose sleep apnea. Sleep related breathing problems are most common in men, overweight people, and older adults. People with sleep apnea often benefit from a treatment known as positive airway pressure (PAP). This treatment keeps the breathing passages open with a steady stream of air flowing through a mask worn over the nose during sleep.
Periodic Limb Movements
Periodic limb movements are brief muscle contractions. The contractions may cause leg jerks that last a second or two. The contractions occur every 30 seconds or so, often for an hour or longer. Some people have leg jerks every night. These movements can cause hundreds of brief interruptions of sleep each night, resulting in restless sleep. Periodic limb movements become more frequent and severe as we grow older. Treatment can include medication, evening exercise, a warm bath, or a combination of these. Iron replacement may be helpful if your iron level is low.