Hello, I just want to inquire if you have encountered anything similar: so I do very easy exercises, cardio and resistance alike. Whilst doing an exercise my heart rate goes to around 120 bpm which is normal, I feel my heart beating strong in my chest. Now I have come to take pretty long pauses, at least two minutes between exercises. So sometimes only during these breaks, as my breath starts to slow a little, my heart rate suddenly booms up to 200+, while doing nothing, and I can hardly feel it beat inside of me, it does not have power. I usually need to sit upside down in order for it to regain a normal beat, otherwise it goes on like that and my body starts feeling numb. Any ideea of the source of this problem ? I'm sure it's not unheard of...