Fitness means many different things to different people, for example an athlete may describe fitness as a 'state of wellbeing that provides optimal performance' however a more general definition would be 'The ability to carry out everyday tasks with vigour and without excess stress or fatigue'.
Total fitness encompasses physical , mental, emotional, medical , nutritional and social fitness and only when all these factors are working at an optimum could we describe ourselves as totally fit.
Our bodies were built to move but our modern lives which are far less physically active than our ancestors' with more gadgets and machinery and reliance on cars, mean that we have to create opportunities more often to keep physically active. If we don't, the list of problems we will encounter through inactivity is endless. Physical fitness will undoubtedly aid our medical, and mental fitness and may also positively affect our social and nutritional fitness.