Only with regular exercise and a healthy diet can you have a body that is fit and has the ability to almost reverse aging. Dan Inosanto, is 79 years old and he is still fit and active. He used to train Bruce Lee and many other martial artists. The martial arts are one of the best forms of exercise. Why? Because you need balance, flexibility, strength and stamina to excel at it. All the punching, kicking and movements will help the body to retain its natural vigor and vitality.