Researchers took two age groups, one ages 18 to 30, the other ages 65 to 80, and assigned each a different supervised exercise training program that included high-intensity and low-intensity exercise.

Another misconception, which seems to contradict the first, is that we’re bound to lose a tooth – or several – if we live long enough, just as we’re bound to get cataracts. But tooth loss and denture use “are not inevitable,” says Dr. Dan Marut, a dentist and founder of Quality Dental Plan, headquartered in Reno, Nev.

She then spent six years exploring ways to replace the sense of purpose work brought her. “I joined a Rotary Club, and volunteered in my community, and attended business and social club meetings. “ Still, nothing replaced the passion of her work. Then, Dunn says she read an article about a retirement coach, and it was her “aha” moment.