An analysis of the oxygen-uptake capacity¹ of life-long Swedish skiers over age 90 has found that they have twice the maximum capacity for oxygen uptake as elderly who do not exercise and their muscle function is on par with individuals half their age.

Aerobic conditioning, which improves the ability of your cells to use oxygen, is not only good for your muscles it prevents insulin resistance and thyroid problems. Any person who is serious about living a long time with their health in tact needs to maintain a high level of aerobic fitness.

The time spent doing so is more than paid back in increased years of quality health.