Why do people exercise?
Exercise provides many benefits to physical and mental health.  It increases strength, cardiovascular health, extends life expectancy, and generally improve people mental and emotional well-being.  

Often exercise occur during very enjoyable activities,  such as sports and outdoor recreation.  Those activities attract people to exercising.
Por que as pessoas fazem exercício?
O exercício proporciona muitos benefícios para a saúde física e mental. Ele aumenta a força, a saúde cardiovascular, prolonga a expectativa de vida e, em geral, melhora o bem-estar mental e emocional das pessoas.