Alright, so in Gym class we are doing heart rates. I turned 14 in late June and my resting heart rate is 100. As far as I can remember I ve always sweated too much during exercise and my heart rate goes up fast. Also, during exercise, I ve had trouble breathing on numerous occasions. 3 days ago my Resting heart rate was 90. After we did the exercise, it was 220. The next day after that, my resting heart rate was 100. After the exercise, my heart rate was 190. Then, today, my resting rate was 90. But this time my heart rate after the exercise was 230. Is that too high? Katie, Nobody in my family has heart problems that I know of. Thank you.