This kind of sleeplessness also can be named " bad habits of sleep ". In occurrence of this infringement of sleep usual things and habits can play a role, which you collide with every day. These habits and features of lifestyle do not allow your sleep become restoring on the present and do not allow you an opportunity to feel like vigorous during all day.

The given features of behavior and lifestyle is possible to divide into 2 basic categories:

1. The stereotypes supporting by you a condition of wakefulness;
2. The stereotypes break your mode of sleep.

There are a big number of the factors, which don’t allow you normally sleep at night. For example alcohol, right after intake makes you sleepy, however in some hours after intake of alcohol people frequently wake up in the middle of night or early in the morning. Intake of coffee, tea or caffeine - containing of drinks (cola) makes you more vigorous and does not allow falling asleep. The nicotine contained in a cigarette, has the same effect. People frequently use these substances to raise the serviceability within day. Therefore, when time to go to bed comes, these people are still too excited and cannot fall asleep.

Other factors not allowing you quickly to fall asleep:
- Excitement;
- Excitation;
- Psychological stress;
- Physical exercises.

Many other habits and features of lifestyle can break your normal regular stereotype of a going to sleep and rise. Probably, you do not go bed and do not rise in time every day. Or, maybe, you lie to doze too frequently within day; this day time sleep is excessively delayed, or is located in time too close from time of a normal going to sleep.
These harmful habits can break biological rhythms of your organism. Therefore, you would not like to sleep when habitual time of sleep has come.

The given disorder can render on you the whole complex of the negative influences, capable to cause:
- Changes of mood;
- Depression;
- Infringements of attention;
- Infringements of concentration;
- Day time drowsiness;
- Feeling of alarm and disappointment concerning the sleep;
- Dependence on caffeine;
- Using the alcohol