Punch, Kick, and Look Lean! Kickboxing is an aerobic form of exercise that helps strengthen and condition your body. It is a martial arts sport that will help get you fit and provide health benefits, such as reducing body fat, increasing flexibility, and strengthening the heart. Kickboxing improves your balance and builds strength. Using speed, agility and power, kickboxing combines the punches, upper cuts, and hooks of boxing with various powerful kicks used with martial arts.