Packed with ideas to help you improve your mental energy and agility, this handy book also includes star ratings and ranked lists showing the effectiveness of each exercise in improving knowledge, memory and creativity. A further ranking system tells you how much fun each exercise is to work through. Don't just think about improving your mind, do it now - in an instant.

Why brainpower?

Your brain is an incredible resource. It contains around 10 billion neurons, each capable of interacting with hundreds or thousands of others. The dendrites that link the neurons amount to around 150,000 kilometres of wiring. When you put the scale of the brain's capabilities against what it actually does, despite the immense complexity of the tasks it handles, there is no doubt that the brain is underworked.

Estimates of the percentage usage vary from the conservative 10 percent to as little as 0.1 percent - whatever the true value, there is vast over-capacity. The exercises in this book, designed to fit into spare minutes in busy lives, will help you make better use of this remarkable organ.