We spend around a third of our lives sleeping. But many people struggle with insomnia or have difficulty staying asleep, and research shows that bad sleep can increase the risk of multiple health conditions. How harmful is bad sleep to our health? And what can we do about it?
Jonny Dymond speaks with Professor Russell Foster, Director of the Sleep and Circadian Neuroscience Institute at the University of Oxford, and author and sleep expert Dr Nerina Ramlakhan about how people can get enough sleep.

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