Type B+: Yeti
Type B+ blood is one of the few blood types that is best suited to apheresis platelet donation, which can make donors a tad cold. Good thing you’re used to snowy mountaintops and come with a built-in winter coat! Like the yeti, who shies away from most humans, your blood group makes up only 8.5% of the US population. When you do emerge from your cave, it will be to help those other B+ and AB+ individuals who can accept your blood donations.