If you want to work until age 80, staying physically healthy is important. Regular exercise, eating well and seeing your doctor can help you avoid illness and stay active. Activities like walking ...

Everything changes with age, it seems – from your blood pressure and exercise recovery time, to how many times it’s “normal” to get up and pee at night. And now, Mark Harris, a fitness ...

Retiring at age 80 isn't common. But, it can be a practical choice for many people. Some work longer because they enjoy it.