1. Increased risk for cardiovascular disease Women sleep less than men and are therefore more at risk for developing heart disease.

2. Metabolic alterations Numerous international studies have found that people who don't get enough

3. Risk of developing diabetes An increase in diabetes risk could be caused by a night of sleep interruptions. Too much sleep can have the exact same effect.

4. The brain slows down The brain's activity is reduced when people sleep. However, it doesn't completely rest so it needs to receive the right signals in order to fall asleep.

5. Premature death is possible Large-scale epidemiological studies show that those who sleep too little die early.

6. Mood changes can be difficult People who are depressed tend to sleep better.

People with depression who sleep longer than is recommended can experience worsening symptoms.