This book is a must read. As the subtitle suggests it does indeed invigorate the brain and reminds us and our tired spirits of the importance of play for our well being. It is research based, interesting, inspiring and is a lovely antidote to those that would steal the fun out of life and learning. For many, play has become a forgotten art and its importance devalued as we get older. Too easily we can forget. This is a "keeper" book for me: a personal prompt and reminder that there is power (and smiles) in play. Thankyou Stuart Brown.