Heart flutters: Possibly. This requires monitoring, Keep a diary. Perhaps a Holter monitor will be valuable. A stress test may help, too, although you are young. Avoid caffeine and energy drinks.
Answered 10/10/2015
3.8k views
Perhaps...: Feeling your heart beat fast during exercise is normal, but the term "flutters" would imply some abnormality. A stress echocardiogram will help clear up what's going on with your heart during exercise, and could be helpful if you're embarking on an intensive exercise program.
Answered 9/29/2016
3.8k views
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