A session of practice in martial arts is a micro manifestation of the Hero's Journey, the Knight does not go to fight the Dragon without preparation, he wears armour and wields a sword and shield.
A martial arts student wears a mouth piece and wraps their hands. The Knight is aware of the threats the Dragon presents and has an intelligent plan to overcome the clear disparity in physical power. The martial arts student is also only able to overcome an opponent of greater size and strength with the intelligent use of techniques, tactics and strategy.
The Knight faces a very real threat requiring him to move forwards in the face of fear, separating him from the men who cannot and with success earns him the title of hero. This grants him the prize in which the dragon had obstructed from him.
The resistance a martial arts student faces is also a very real threat, they will be punched, have ligaments torn, bones broken and be choked unconscious, but just as in the hero’s journey, if they are able to be move forwards and contend with this resistance despite the fear they will be rewarded with the skill of overcoming resistance and develop a character that is strong and valuable.
Aiming at this target of health provides you with a strong sense of meaning and the ability to produce this sense of meaning in your life is what it truly means to be healthy.