Re: Heart skipping a beat?
I've had this experience and at first it was quite scary. I actually took myself to the emergency room the first time it happened.
After meeting with the cardiologist and then going for further tests it was deemed as premature ventricular contractions. Nothing to be worried about. I notice it more when I'm not working out. The cough you mention is a reflexive response of the body when there are heart palpitations to try to get it to stop. Often it's the cough that alerts me to the fact that my heart beat is off.
Keep in mind, I have had my skipped heart beat diagnosed and I know what to do and take to stop to stop it. It's best to have any heart issue checked out throroughly so you can have peace of mind and clearance to go ahead and workout out.
Hope this gives you some helpful insight.