It's hard to believe: Married women tend to be more stressed than single women, a recent study has brought to light.

Married women are more likely to have headaches, sleep problems and constant fatigue, according to a study.

Until a man is 43 years old, he acts like a child. Now think about what could be more exhausting than a real child: a grown man acting like a child. So for married women, their husbands usually represent just another child.

Among all the other stresses a wife faces in her daily life, husbands are the biggest stressor. 56% of all women surveyed said that their husband causes more stress than their child.