"NSCA's Essentials of Tactical Strength and Conditioning" is a comprehensive textbook authored by Brent A. Alvar, focusing on the subjects of sports medicine, bodybuilding & weight training, military training, and general fitness. Published by Human Kinetics in 2017, this hardcover book contains 688 pages of essential information for individuals interested in improving their strength and conditioning. With a weight of 4 lbs and dimensions of 11.3 inches in length, 8.8 inches in width, and 1.6 inches in height, this textbook is a valuable resource for those looking to enhance their physical performance in a variety of contexts.