Why challenge and stimulus improves your brain and how to harness this process? How to separate good stress from bad? What role hope and socialising play in fighting off the worst symptoms of dementia? Why multitasking can be detrimental to your mental health. This work can help adults of any age build and retain their mental acuity.

A renowned cognitive psychologist, Sholomo Breznitz has been a visiting professor at several leading institutions including the London School of Economics and Stanford University. The author of seven books and many scientific articles, he is also the founder of CogniFit, a company devoted to improving cognitive fitness. Collins Hemingway is a writer and technologist who has co-written several books and written innumerable articles for the general public.