Train in the garage at your home to improve your fighting stats using whatever Gym equipment you have brought from the Sporting Goods Store. Tap on the couch in your home to get rest so you boost your Energy and Health rating but also lower your Hunger. Tap your fridge to make your fighter eat some food and boost their Hunger rating back up and watch TV to raise their Happiness. Your two main sources of income when you start the game is either working at the building site or the pizza joint.