It definitely does go above 140 fairly quickly during exercise, and easily goes over 100 when walking. I have consulted a cardiologist as I mentioned as recentl

It definitely does go above 140 fairly quickly during exercise, and easily goes over 100 when walking. I have consulted a cardiologist as I mentioned as recently as a year or so ago. I went because this was something that was not really followed up on when I was a child and I wanted to make sure I wasn't dying of some undiagnosed heart issue. They did a basic EKG, had me wear a device to monitor my heart for a few days, and then also did a blood test to check for things like thyroid issues. Nothing came up. They said my heart rate was high, but did not find a cause. Good to know regarding doctor's visit should it come to that, thanks!