I developed some weird condition with my heart last year when I was in PE (10th grade). That was my last PE class, having had it every year from 6th grade with the exception of the first semester that year. Anyway, I get this weird feeling in my heart that s something like a mix of being surprised and being excited (including doing sports). It kind of feels like my heart skips a beat though it s not painful; it s more of a discomfort. It happens just about any time, regardless of whether I m physically active or not. In fact, it happens pretty often when I wake up from a nap (which is no longer than an hour and a half). Other facts about me in case they re relevant: I am about 5 11 around 235 pounds (haven t been weighed lately) and I m almost 17. I don t drink much caffeine at all, it seems to increase the frequency a little when I drink it but barely, plus it happens no matter what I drink. I am not diabetic and I don t consume a lot of sugar. I went to the doctor; they did an EKG and a blood test and nothing came up. It was expensive, though. I m not obese and I already got an EKG. I d rather have an explanation, though. It does say that it could be bad if they occur often, but what exactly would often be? It happens at the VERY least one time per hour but that s on a very boring day. Yeah I don t get a lot of exercise but it started happening when I was getting a bit so I m wondering what that has to do with it.