National Geographic Fight Science Stealth Fighters: The Fight Science team explores the deadly art of stealth fighters, from hidden defenses to infiltration and escape skills – and discovers some results that defy science. Experts in Brazilian capoeira, karate, tae kwon do, and muay Thai kickboxing execute hair-trigger techniques that push the limits of human ability. A martial artist demonstrates evasive maneuvers and a Shaolin warrior breaks a steal-tipped spear aimed at his throat, allegedly by manipulating the body’s powerful energy.