Serena Williams is one of the most famous and successful tennis players in the world. Serena decided to do something good with her fame and fortune and became a UNICEF Goodwill Ambassador, in which she assisted in the immunization of children in Ghana and build two day schools in other nations in Africa. In addition to her work with UNICEF, Serena founded the Serena Williams Fund that works with other organizations to bring about change in a wide range of social issues.
Staying fit is certainly a commitment. Besides doing the physical training, there are some other factors to consider, like nutrition