Odd Human Body Facts II.

The heart beats ______ million times a year.

A single hair can hold the weight of a hanging ______.

The speed of an incoming brain impulse is about _____ km/h

An human sneeze can exceed approximately how many miles per hour when leaving the body?

Smiling triggers more muscles of the face than crying

A human eye can distinguish up to _____ million different colors.

The average person consumes about ______tons of food during his or her life.

An average human loses how many skin cells — that amounts to 2 kilos every year?

The number of bacteria in a person’s mouth is equal to the number of people on Earth

Nails that are soft and brittle, with no moon, could indicate an ________ thyroid.

What part of the human body grows throughout our lives by a quarter of a millimeter per year!

There are ______ different blood types.