How can the furniture in your home affect your wellbeing? What colour clothing will help you play sport better? And what simple trick will calm you after a tense day at work? In this revelatory book, pioneering and entertaining Oxford professor Charles Spence shows how our senses change how we think and feel, and how by 'hacking' them we can reduce stress, become more productive and be happier. We like to think of ourselves as rational beings, and yet it's the scent of expensive face cream that removes wrinkles (temporarily), a room actually feels warmer if you use a warmer paint colour, and the noise of the crowd really does affect the referee's decision. Understanding how our senses interact can produce incredible results. This is popular science at its unbelievable best.