Fitness is the ability to carry out daily tasks with vigor and without undue fatigue, with sufficient energy to engage in leisure-time pursuits and the vitality to perform at one’s fullest capacity.  Most people say they just can't find time to exercise.  Well, if you look around you'll never find the time, you have to make the time.  Schedule a time for yourself to exercise, just like you would if you were going to the eye doctor, because your health depends on it.  30 - 45 minutes 3 - 4 days a week is all it takes to get started.  Your focus should be your health fitness.  "God owns me, but I need to take care of me." 

Physical fitness is a set of attributes a person has in regards to a person's ability to perform physical activities that require aerobic fitness, endurance, strength or flexibility.

It is a set of attributes that are either health related or performance (or skill) related. Health related fitness comprises those components of fitness that exhibit a relationship with health status. Performance/skill related fitness involves those components of fitness that enable optimal work or sport performance.