The body is a complex machine, and your heart is right at its centre. It's the most important of muscles and about the size of a fist, pumping blood around your body. It's an amazing thing.
But there are times that it needs help to function properly and continue to work as hard as it needs to.
Dr Mohamed Al-Obaidi is a Consultant Cardiologist.
It is currently his fifteenth year of practice as a Consultant, with many years before this focusing on his passion - to work with patients who need specialist help with their hearts.
