Walnuts and dried bananas
Walnuts help in narrow situations, because they are a real source of magnesium (100 g walnuts contain 130 mg magnesium), which calms the nervous system. Only two nuts a day to meet the daily needs for magnesium. If you suffer from insomnia at night before bedtime drink a glass of milk and eat two dried bananas which are also a rich source of this mineral.