2 a : consisting of or relating to blood b : bloodthirsty, sanguinary c of the complexion : ruddy
3 : having blood as the predominating bodily humor; also : having the bodily conformation and temperament held characteristic of such predominance and marked by sturdiness, high color, and cheerfulness
4 : confident, optimistic
When I picked this word it was the fourth definition I had in mind. I promise. I’m not a vampire.
PS: Thanks, Merriam-Webster!