The five curiosity of the day abt sex.

1. Couples who have sex without condoms have fewer depressive symptoms, and moods higher.

2. Sex makes women's hair shiny because estrogen increases.

3. Women often suffer from headaches tend to want to have more sex than those who suffer less.

4. Freud believed that all humans are born bisexual, but become monosex through psychological development.

5. The left-handed people have 39% more chance of being gay.