"Chronic extreme exercise appears to cause excessive 'wear-and-tear' on the heart, " the editorial says.

WSJ: Endurance Sports: Studies on Older Endurance Athletes Suggest the Fittest Reap Few Health Benefits

These come down to smoking, excessive drinking, overeating and lack of exercise.

FORBES: CDC Chief Would Thank China for Not Smoking

Their vote against the stimulus bill was the first real test for Republicans to exercise their frustration with what they describe as excessive federal spending.

CNN: Analysis: GOP learning to be opposition party