Originally Posted by
andrewluke
My doctor has told me that your max heart rate is literally the maximum your heart can pump. Mine is 203 at 27 and I average around 170 on most rides at good effort. The formula is just a ballpark.
The real danger is being in that 95%+ range for too long of if your heart rate does not come down after you chill out. If you're going hard and then back off, your heart rate should fall accordingly fairly quickly. I'm not talking down to resting but mine settles around 130 pretty a couple minutes after hard intervals.
Staying too high too long will result in dizziness, fatigue, and a sick feeling as you start starving of oxygen. This is fine if it's temporary (like toward the end of intervals) but prolonged periods are dangerous
Dangerous? How can it be dangerous? It's a self-correcting problem. You pass out, heart rate comes down, all the good red stuff gets to all the important gooey bits, and all is well in your little corner of the world.
Absent any underlying cardiac disease, over-exertion by itself is not dangerous. Now falling off your bike onto your head, or riding into a wall is another story...
Originally Posted by
banerjek
I'm afraid that you have to. Based on your numbers, I'm sure most of the guys here would agree that a colonoscopy is a must...
Or, just stick around here for a while. Same thing...