Well I have ended up in hospitals occasionally, and they remark on my low resting pulse, and blood pressure. But I have had a heart flutter too It bears telling the tale. I was riding one day and realised thet it took some effort to keep up with another cyclist who was not riding particularly fast, and on arrival at my destination I was a gasping wreck. The condition persisted for that day, and into the next. Any exertion left me feeling totally whacked. I called my GP and from the symptoms described he suggested going directly to A&E. They took some measurements and I asked if I would get something to take when I went home (expecting to walk out). Instead I was told bluntly that my pulse was blundering about at a ridiculous rate, and my BP had plummeted to below 100. I suspect that had I not been a regular cyclist I would have been on the deck at least 24 hours earlier. A quick restart with the jump leads sorted things out and the cause - suspected to be a viral infection that kicked the heart into an unstable rythym. A similar report comes from a CTC veteran who believes he is oldest person to survive treatment for septecemia, which can involve forcing up a body's metabolic rate to fight the infection. Most older patients die because their cardiovascular systems cannot withstand the hammering this treatment brings on. Maybe it is an effect of a fitter person fending off minor ailments and then only a massive event stops them in their tracks usually so massive that a recovery is unlikely and hence the Mail's unfortunate misreading of the information presented. Dave H In a message dated 24/02/2011 09:53:20 GMT Standard Time, [log in to unmask] writes: http://www.dailymail.co.uk/health/article-1360091/Heart-attacks-Cycling-work -biggest-causes.html