Some of the classics, on the other hand, could: racquet sports (tennis, racquet ball), swimming, and aerobic exercise. Basically, stuff old people already love doing at country clubs.
The study was based on data collected on 80,000 people surveyed in England and Scotland between 1994 and 2008. Those who engaged in the aforementioned activities had the least chance of dying during the 14-year survey period, compared to people who didn't exercise at all. Surprisingly cycling, which is such a popular form of exercise it's garnered a cult following, didn't fare as well. The study's author theorized that people who claimed to cycle regularly for exercise might actually just be biking around for fun and not really working up a sweat. What, people exaggerating their fitness habits? Say it ain't so.