Sometimes after hard static training, and most of all during and after CO2 tables, I notice my heart beating very hard and fast. It goes on for a long time afterwards. There isn't any arrythmia or any other bad feeling. This happens less and less, and now even the hardest CO2 table doesn't set it off. Maybe I have built up tolerance.
I am careful not to push myself too hard. I have never felt bad as a result of overtraining. It is important to listen to your body and not do anything which causes bad things such as arrythmia.
Yesterday I did the most incredibly hard CO2 table... well, most of it was very easy, it was the last few minutes that made it so difficult.
For once I actually feel like getting some CO2 training done... Bring on the tables!
Lucia