4. Palpitations
A rapidly beating heart could be the sign of a lot of things, including cardiovascular issues. However, it is also likely that that alarmingly fast heart rate is connected to the lack of oxygen in your blood.
After any kind of exercise, your heart rate naturally goes up. This is why it’s so important to warm up before exercising and cool down afterward. A consistently rapid heart rate is not good for your heart or the rest of your body.
Needless to say, your heart is one of the most important organs in your body. It pumps blood through your veins. However, when there’s a low level of oxygen in the blood itself, the heart has to work extra hard to make up for it. This puts a lot of pressure on this organ, causing it to beat faster than normal. The beat could also be alarmingly irregular.