In Sleep part 3 we sit down with Lucy to delve a little deeper into the benefits of sleep, and if it's quality or quantity which is more important.

We also look at the effect of insomnia on health - implications for shift workers, clinical evidence of incidence of heart attacks during daylight savings and just one hour less sleep per night (https://openheart.bmj.com/content/1/1/e000019), and any possible links to sleep reduction and dementia (an increasingly emerging area of information).