Bladders
Twats everywhere
The Human's record in WHC tells you everything you need to know about it:
2007 - DNQ
2009 - DNQ
2010 - Round 2 - lost to GWS
2011 - Group stage (1 vote)
2012 - Group stage (12 votes)
2013 - Round 2 - lost to Cassowary
2014 - QF - lost to Mantis Shrimp
2015 - Group stage (7 votes)
Basically it's supported through the first stages by a few people who don't understand what hardness is, then it capitulates against any real competitor.
Still this hardcore support means it is the 19th highest vote scoring animal in WHC history - above the Lion, Rhino and Tardigrade.
I'd say its the other way around, that most do not support it through lack of understanding what proper hardness is.
The HB stands up to a Lion then its called hard. A human stands up to a Lion its called stupid.