Featured image via Flickr by Andrew Mason

25 Crazy Things You Might Not Know About Blood - 1425 Crazy Things You Might Not Know About Blood - 8725 Crazy Things You Might Not Know About Blood - 3225 Crazy Things You Might Not Know About Blood - 425 Crazy Things You Might Not Know About Blood - 725 Crazy Things You Might Not Know About Blood - 4525 Crazy Things You Might Not Know About Blood - 1925 Crazy Things You Might Not Know About Blood - 1025 Crazy Things You Might Not Know About Blood - 6025 Crazy Things You Might Not Know About Blood - 9125 Crazy Things You Might Not Know About Blood - 5625 Crazy Things You Might Not Know About Blood - 5625 Crazy Things You Might Not Know About Blood - 4725 Crazy Things You Might Not Know About Blood - 5325 Crazy Things You Might Not Know About Blood - 9225 Crazy Things You Might Not Know About Blood - 9925 Crazy Things You Might Not Know About Blood - 6225 Crazy Things You Might Not Know About Blood - 4725 Crazy Things You Might Not Know About Blood - 5425 Crazy Things You Might Not Know About Blood - 7525 Crazy Things You Might Not Know About Blood - 7225 Crazy Things You Might Not Know About Blood - 2925 Crazy Things You Might Not Know About Blood - 1525 Crazy Things You Might Not Know About Blood - 1825 Crazy Things You Might Not Know About Blood - 3825 Crazy Things You Might Not Know About Blood - 2825 Crazy Things You Might Not Know About Blood - 7825 Crazy Things You Might Not Know About Blood - 4925 Crazy Things You Might Not Know About Blood - 4225 Crazy Things You Might Not Know About Blood - 8225 Crazy Things You Might Not Know About Blood - 7825 Crazy Things You Might Not Know About Blood - 2325 Crazy Things You Might Not Know About Blood - 4225 Crazy Things You Might Not Know About Blood - 6825 Crazy Things You Might Not Know About Blood - 6925 Crazy Things You Might Not Know About Blood - 225 Crazy Things You Might Not Know About Blood - 3225 Crazy Things You Might Not Know About Blood - 61