The '7-1' Sleep Method Could Add Four Years To Your Life

Given the overwhelming amount of sleep advice out there, it can be hard to define what “good” sleep actually means, never mind how to achieve it. 

But a white paper from Vitality and The London School of Economics and Political Science has suggested that two numbers – “7-1” – provide a way to “distil the science into a simple rule of thumb”.

What is the “7-1” rule?

The approach, which they estimate could add up to four years to your life and boost the economy, is simple: “aim for seven hours of sleep per night...