How your heart works
Your heart is a pump that keeps blood moving around your body.
It works 24 hours a day to keep you alive.
About your heart
Your heart is a muscle, about the size of a
fist. It is in the middle of your chest tilted slightly to the
Each day, your heart beats about 100,000 times.
It pumps about 23,000 litres (5,000 gallons) of blood around
This blood delivers oxygen and nutrients to all parts of your
body, and carries away unwanted carbon dioxide and waste
Find out more about how a healthy
heart works, and its role in your circulation system.
Your donations are helping our scientists to mend broken hearts. Help us win the fight
against heart failure.