Men and women are truly different. It's not just appearances, but rather what's on the inside. Here are some scientific facts about our chemistry make-up to our behavior. Check them out:

1. Men's brains are 10% larger and 11% heavier than women's brains.

2. Men have a higher pain tolerance than women.

This explains Jackass.

3. Except during birth

4. Men have lower rates of anxiety and depression compared to women.

5. Women spend an average of 2 years looking at themselves in the mirror.

6. Men spend 6 months.

7. Women spend a total of 4 years in total of their lives menstruating.

8. The 'extreme male brain' theory is that autism is an extreme form of maleness because it favors systemizing over empathizing.

9. Psychoses on the other hand are extreme forms of femalessness because of complete favoring of emotional over systemizing input.

10. Men can drink better than women. Their bodies are 62% water compared to women's bodies at 52%.

11. Women carry twice the number of bacteria on their hands than men.

12. Women are more talkative: 7,000 words a day, while men speak only about 2,000