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. 

Know Your Heart

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 left.

Each day, your heart beats about 100,000 times.

It pumps about 23,000 litres (5,000 gallons) of blood around your body.

This blood delivers oxygen and nutrients to all parts of your body, and carries away unwanted carbon dioxide and waste products.

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.

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