If your blood oxygen and heart rate are high after fitness, I suggest you stop exercising first, find a quiet place to sit down, relax and let your heart rate gradually decrease. If your heart rate is still high, or you feel dizzy, chest tightness and other uncomfortable symptoms, I suggest you seek medical advice in time.

Besides, in order to stay healthy, we need to pay attention to controlling our heart rate. Studies have shown that when the heart rate increases 5 times per minute, the risk of heart failure increases 13%, and the risk of death increases 13%. The optimal heart rate is 60 beats/min. Every time the heart rate increases 1 1 times/minute, the total risk of death increases 15%.