Ladies...you now have science to back up your grumpiness in the morning and you can now tell the men in your life to back the heck off you in the morning. Researchers at Duke University have found that women need more sleep than men. The study at Duke, headed by Sleep Doctor Michael Breus, led to the discovery of many eye opening things about women and the repercussions of a lack of sleep. What is most worrying is that women may contend with a higher degree of stress from lack of sleep. "Lack of proper sleep leads to various health problems in women such as risk of developing heart diseases, depression, psychological problems and strokes." Dr Breus and his research team also found that men do not develop the ailments that afflict women when they are sleep deprived. We found that women had more depression, women had more anger, and women had more hostility early in the morning," said Dr Breus, according to The Australian. Breus advised naps that were either 25 or 90 minutes but also argued that naps of any other length of time would just make women more tired. One of the biggest functions of sleep according to the Sleep Research Center at Loughborough University is to allow the brain and body to recover and repair themselves. Just as the muscles you work during that Hiit workout need more time to recover the harder you push them-so does your brain. The harder its worked during the day the more sleep you need to help it to recover. As it turns out women are multi-taskers...well duh...and the fact that their brain is concentrating on doing lots at once with a high degree of flexibility, women use more of their actual brain than men do and therefore need sleep more. The study went onto show that women need about 20 minutes more sleep a night. Think about it this way: here's a man's computer with one application running at a time. He opens up the internet finds what he's looking for closes it down and then opens up his email works there for a moment and then closes it again. There is only ever one application open at a time. Applications aren't open for long periods of time. Here's a woman's computer: every single application that she will need for the day is open and she's penning off emails while checking her children's school schedule. So ladies go to bed earlier and try cutting down on the amount of time that you spend multitasking if you're feeling tired. And hey now you have science to back up why you don't want to get out of bed in the morning.