Naruto Workout / What it works: Triceps, shoulders, intercostal muscles, quads, front hip flexors, side hip flexors, lower abs. calves, glutes, lower back, cardiovascular system, aerobic system (VO2 Max).
Itachi Uchiha, Gaara of the Desert, Kakashi Hatake, Sasuke Uchiha, and Naruto Uzumaki from Naruto........ I would be very busy for a while.... Either training to be a ninja or otherwise, good luck figuring out which one though.... Don't ask.