Manual of freediving : Underwater on a single breath

Is the first comprehensive manual that teaches how to hold the breath, stay underwater longer, and descend deeper into the blue. The book includes a history of freediving, and detailed drawings of underwater exercises, finning techniques and selected Yoga postures to enhance lung capacity. This book is highly recommended to Skin-divers, Scuba-Divers and Surfers. It teaches how to hold the breath longer under water.