In Abdominal Muscle: The Navy Seal Workout : The Compete Total-Body Fitness Program

The Navy SEAL Workout doesn't disappoint. The program will build tremendous upper-body strength and muscular endurance through a series of pull- ups (there are five variations on this exercise), dips, and push-ups (four variations). A fitness professional might quibble with some of the choices of abdominal exercises--they can overwork hip-flexor muscles, which can lead to lower back strain--but th ...Abdominal Muscle