Mens sana in corpore sano (Classical Latin: [mẽːs ˈsaːna ɪŋ ˈkɔrpɔrɛ ˈsaːnoː]) is a Latin phrase, usually translated as "a healthy mind in a healthy body". The phrase is widely used in sporting and educational contexts to express that physical exercise is an important or essential part of mental and psychological well-being.