In Korea, Japan, and Taiwan, a person's blood type is believed to be indicative of their personality, as well as their compatibility with others—Japanese morning TV shows feature blood type horoscopes, many matchmaking services cater to blood type, and, in some East Asian countries, you can include your blood type in your Facebook profile.
Clockman Type A Alarm Clock, $41, amazon.com.
There are even special products marketed specifically to different blood types, like this cute little alarm clock designed to wake up reserved, patient Type A's as gently and politely as possible.
So, Who Are You Then?
Already know your blood type? See what else it says about you, using this Japanese blood type personality chart.