That women suffer from insomnia more than men is a pretty well-known fact, and as women age, it seems to become even more pronounced. But the cause of the gender divide, like many other aspects of health and mental health, hasn’t been totally clear. A new study, however, looks into how the sleep-wake cycle works in women and men under normal conditions–and understanding the difference in healthy individuals actually reveals a lot about why women have more trouble sleeping and why they wake up earlier than men.
