Term Definition Word Used In Sentence life management skills Skills essential to maintaining a healthy active lifestyle He has poor life management skills. health Being free of injury My doctor said to keep my health in check by eating more healthy wellness Being in good health I maintain my wellness by working out everyday and sticking to my diet infectious diseases A disease caused by microorganisms that invade tissue The flu is a very infectious disease. lifestyle choices Choices that define the way you live My lifestyle choices are superior to yours. lifestyle diseases Bad lifestyle choices that can have a negative effect on your health My obesity is not a lifestyle disease. chronological age The number of years a person has lived My chronological age is 20 years old. Image physiological age The state of your body relative to the standard state of a body the same age My chronological age is 20 years old but im just as healthy as a 16 year old. centenarians A person whos chronological age is 100 or greater My grandma just became a centenarian!