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Aerobic activities like jogging and interval training can make our cells biologically younger; weight training did not have the same effect. These results would seem to indicate that exercise needs to be aerobically taxing to extend telomeres and slow cellular-level aging, says Dr. Christian Werner, a cardiologist and researcher at the University of Saarland in Germany, who led the new study. “In the parameters we looked at, endurance exercise was clearly ahead of resistance training,” he says.
Credit: Jeenah Moon