Sleep is one of the most important pillars of health. 

Our bodies and our brains are designed to function during the day and rest at night.

Circadian rhythms are 24-hour cycles which are kept in time by light and dark cycles.

These rhythms can become disrupted by changing our exposure to light which can affect our sleep and make us feel sluggish during the day. Everything from our immune-system function, our gut function, our muscle strength and our hormones show a daily rhythm.


We often think of sleep as the third pillar of health underneath diet and exercise but Matthew believes sleep is the first pillar on which all others sit.

Today’s guest is world-leading sleep researcher, author of the international best-selling book ‘Why We Sleep’ and Professor of Neuroscience and Psychology, Matthew Walker.

Matthew shares research on how important sleep is for our health and the amazing power it has to recharge our mind and body. He believes that sleep is one of the most efficacious forms of health insurance that you could ever wish for.