This gifty book of yoga positions is geared toward hikers, bikers, and kayakers. The basic poses can be performed in or on top of a sleeping bag, within the confines of a tent. Positions have been renamed (for example, "Arches" instead of the Sanskrit Setu Banda) to make yoga accessible to a wider audience. The book is divided into two sections: a basic sequence and a strengthening series. The basic poses require minimal body movement and can be performed within a tent. This sequence of poses is relaxing when performed from start to finish and invigorating when the sequence is reversed. The twelve poses of the strengthening series are designed to improve balance, coordination, and endurance and prepare you for a new day of outdoor travel. While there are many yoga books out there, Sleeping Bag Yoga remains the only book that caters to lovers of the outdoors. New material in the updated edition includes seventeen new poses, several Sanskrit word meditations, and color illustrations.