We are constantly told to make the most of our time. Stop procrastinating. Optimise. To be happy, creative and successful requires discipline and focus. The most important thing is to be efficient with every precious hour. But when we let our brains rest, and our minds wander, something magical happens- the brain's 'default network' switches on, and suddenly we are able to think in completely new ways.

Blending science and personal stories with practical tips, Dr Joseph Jebelli reveals how neuroscience is solving the mystery of the brain at rest, with profound implications for intelligence, creativity and even life expectancy.

If we dare to break the taboo surrounding rest, we will find that long baths, walks in nature, meditation and simple daydreaming are the key to a happier, healthier - and ironically, more productive - life.