Too much exercise?

A new study reports that, despite changing the structure of the heart, “chronic right ventricular damage in elite endurance master athletes with lifelong high training volumes seems to be unlikely,” as reported in The New York Times. Interesting, since A-fib has seemed to have a markedly higher incidence among endurance athletes training at high volume. In fact, I know of at least one lifelong endurance athlete, a widely respected physician and longevity researcher, who switched to strength training specifically because his concerns over A-fib.

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