Acclaimed science writer Jennifer Ackerman lends her keen eye and lively voice to this marvellous exploration of the human body. Taking us through a typical day, from the arousal of the senses in the morning to the reverie of sleep and dreams, Ackerman reveals the human form as we've never seen it: busy, cunning, and miraculous. Advances in genetics and medical imaging have allowed us to peer more deeply inside ourselves than ever before, and one of the most amazing recent discoveries is that we are intensely rhythmic creatures. The human body is like a clock - actually an entire shop of clocks - measuring out the seconds, minutes, days, and seasons of life. Weaving pieces of her own life with that of Everyman, Ackerman shows the importance of synchronising our actions with our biological rhythms - and how defying them can cause us real harm. At once entertaining and deeply practical, this fascinating book will make you think of your body in an entirely new way.