Michael reveals how getting some shut-eye during the day could boost your memory and your heart health - and even help your productivity! Research reveals that a simple daily nap could slash your risk of heart attack by half, and have a noticeable impact on your brain, by helping improve your emotional control and boosting memory. In this episode, our volunteer Caroline catches some Zzzs in between work meetings, while nap expert Dr Sara Mednick delves into the different stages of sleep, telling Michael when to nap, and for how long, for the greatest benefit.