Our body

1- The feet account for one quarter of all the human bodies bones.
2- Women’s hearts beat faster than men’s.
3- There are four main Blood types: A, B, AB and O and each Blood type is either Rh positive or negative. Blood types in the US - Type O positive 38.4%, O negative 7.7%, A positive 32.3%, A negative 6.5%, B positive 9.4%, B negative 1.7%, AB positive 3.2%, AB negative 0.7%.
4- The human body has over 600 muscles, 40% of the body’s weight.