Instant Genius is a bite-sized masterclass in podcast form. In this week's episode, we talk to Dr Sian Harding.

She's a cardiologist and author of the book The Exquisite Machine: The New Science Of The Heart (£25, Penguin)

In this episode, she explains how the heart works, how to keep it healthy and debunks a number of popular myths around this ever-so-important organ.

Find Instant Genius on your preferred podcast platform here: instantgenius.podlink.to/Podcast

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Authors

Alex is a staff writer at BBC Science Focus. He has worked for a number of brands covering technology and science with an interest in consumer tech, robotics, AI and future technology.