Random Acts of Kindness (RAK) is a term used to describe acts of kindness that are done without expecting anything in return. The term 'favors' is often used to describe these acts, as they are usually done out of goodwill and generosity. Favors can range from small gestures such as holding the door open for someone, to larger acts such as donating money or time to a charity. Regardless of the size of the favor, it is an act of kindness that can make a difference in someone's life.