Joined: Dec 2004
Posts: 12,560
Likes: 799
From: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, Bacchetta Quattro, Catrike Speed
Forty is pretty young for heart issues caused by too much exercise. That's more likely to hit in 50s and 60s, with a bad valve showing up then. My brother used to run excessively, and now at age 63 he has a pig valve. We don't want to believe bad things about our sports figures, but drugs are the more likely cause.