The sleep equation

There is nothing in the known universe that joins the dots between health, recovery and performance as comprehensively as sleep. It is vital and irreplaceable. No facsimile or pharmaceutical has yet been found that yields the same tangible dividend of spending a full third of our lives unplugged from the world. In the words of one of the world’s foremost sleep experts, Dr Charles Samuels, medical director of the Centre for Sleep & Human Performance in Calgary, Canada, ‘Sleep is the foundation of passive human recovery. End of story.’

Fun fact: the states