How Drinking Giraffes Avoid a Head Rush

How Drinking Giraffes Avoid a Head Rush

November 9, 2019 11 By Bertrand Dibbert


(upbeat music)
(birds chirping) – [Narrator] But when beaten by the heat, giraffes must join their fellow
beasts at the watering hole. Being tall, it’s tricky. In this pose, the pressure
is quite literally on. Pumping blood all the way up to its head takes a powerful heart. It beats up to 170 times a minute. That’s twice as fast as ours. (gentle music) This huge blood pressure,
the highest of any mammal, should give a drinking
giraffe a bad head rush, but instead, a clever
system of valves regulates blood flow to the brain. The giraffe controls
blood pressure so well that NASA has taken inspiration from these humble Goliaths for
the design of its spacesuits. It seems this big beast can
even teach us a thing or two.