I have a heart condition called "Supraventricular Tachycardia" but it's more commonly called "SVT". Basically, my heartrate will go REALLY fast out of nowhere. It's not like how fast your heart beats after you go on a run, it's WAY faster than that. The good thing is it only happens for 30-45 seconds with me. I could be sitting at my desk, or I could be on a walk and it happens. Thankfully, sometime this summer I'll have a procedure done to have it "removed." I just thought I'd say a bit about this :)