This is an interesting article that says Exercise Capacity is a bigger predictor for how long someone will live than risk factors like heart disease, high blood pressure, and smoking.

Keep Working Out.

BOSTON, Massachusetts (AP) -- A person's peak exercise capacity as measured on a treadmill test is a more powerful predictor of how long someone will live than risk factors such as heart disease, high blood pressure or smoking, a study says.

http://www.cnn.com/2002/HEALTH/diet.....ap/index.html