"If you make it to your 92nd birthday, your odds of staying spry as you head toward the century mark may be better than you expect.

That news comes from a study of 2,262 Danish adults starting at age 92. Everyone born in 1905 in Denmark and still living there was invited to participate, whether they lived at home or in an institution and needed someone to help them take part in the study. They were followed until they reached 100.

The study was all about seeing whether exceptional longevity came with high levels of disability. The short answer: It didn't. Extreme age didn't bring extreme disability, overall."