| 1. | Sleep as much as needed to feel refreshed during the day, but not more. |
| 2. | A regular waking time can lead to regular times of sleep onset. |
| 3. | A steady ammount of daily exercise probably deepens sleep. |
| 4. | Sleep in a quiet room. |
| 5. | Excessively warm rooms disturb sleep. |
| 6. | Hunger disturbs sleep, a light snack may help sleep. |
| 7. | Caffeine in the evening disturbs sleep, even in those who do not feel that it does. |
| 8. | Alcohol helps tense people fall asleep, but the sleep is then fragmented. |
| 9. | The chronic use of tobacco disturbs sleep. |
| 10. | People who feel angry or frustrated because they cannot sleep, should turn on the light and do something different until they feel tired enough to sleep. |
| 11. | An occasional sleeping pill may be of some benefit, but their chronic use is ineffective. |