A hefty information book divided into three major sections: Understanding your brain; Understanding your senses; Understanding your muscles and bones. The book is complex, full of diagrams, pictures and exercises and uses technical terms. It is also humorous, with lots of funny facts: 'Your brain is just over one kilogram of gooey, slimy, wobbly, gelatinous stuff which smells of blue cheese'. I certainly didn't know that! An index pulls together all three sections. A really interesting, browsable book.