"Sexual Fitness: Complete Vitality" by Time-Life Books is a comprehensive guide to improving sexual health and vitality. Published in 1988, this hardcover book delves into the psychological aspects of human sexuality and offers practical advice for enhancing sexual fitness. With 144 pages of valuable insights and illustrations, this book from the "Fitness, Health and Nutrition Ser." is a valuable resource for those looking to improve their overall sexual well-being and vitality.