Historically, sweat has been an active ingredient in perfume and love potions.
309
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
The single biggest predictor of love is proximity.
30
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14