Morale
From MMA Tycoon Wiki
Morale is an important variable within the game. If your fighter has low morale, he won't perform to the best of his abilities in any aspect of the game. Your fighter starts with a maximum level of morale and this level is affected by a number of factors within the game;
Fight results (winning/losing). Gym cleanliness. Moving locations/changing base. Running out of money in certain situations.