They have changed my lifestyle to the point I stray away from physical activity to minimize them. They are extremely distracting and uncomfortable. The difference in feeling an arrhythmia can depend on the strength of the heart. During this pause the heart fills with an increased among of blood and strong hearts which pump out with more force on the next beat. Not usually, but if you are concerned about them they might impact on the quality of your life.
Some people worry about their hearts stopping.
This just does not happen, as these are extra beats, not missed or skipped beats. Perhaps the greatest risk is that someone will respond to your problem and prescribe a medication which will cause a side effect. It tends to be useful for arrhythmias related to exercise or stress and can be effective at low doses such as 25mg per day which can be taken at night. This is to ensure that all is normal and so you can carry on with your life. Certainly they are not worth changing your life style for and you should keep running and skiing unless your MD says otherwise.