If you’re somewhere quiet right now, you might be able to hear the regular thud, thud, thud of your heart.
It keeps up its regular beat, day and night, without you ever thinking about it.
But babies like George, who was born with a heart defect, aren’t so lucky.
His little heart couldn’t pump enough oxygen around his tiny body—especially because he was born prematurely, with lungs that weren’t yet strong.
His mum Alinta, remembers his first cries sounded like a little kitten.
You can read George and Alinta's full story here.