A man's beard grows fastest when he anticipates sex.
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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
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
Raj from the Big Bang Theory is married to Miss India.
11
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104