Based from my experience, too much exercise will increase heart rate, like it will continue to pump. I am not sure if the experience is the same as others, but from my experience, my heart beat faster and I was too tired. I exercised for more than an hour. I mixed my cardio exercise with dancing and I really enjoyed it. After that, it decreased my energy and I was too tired, getting near of collapsing. I am glad that I exercised inside my room.
every one has a diferent level of stamina, so every lets check out some benefits of being active and what happens when you are going beyond your physical limits.