Can you run a marathon in sinus rhythm?

Sinus rhythm

is a rhythm originating from the sinus node, belonging to the normal rhythm of cardiac electrical activity. If the body function is good, no serious joint disease, lung function damage, can adapt to high-intensity exercise, generally can run marathon. But if suffering from severe ankylosing spondylitis, rheumatoid arthritis, pneumonia, asthma, pulmonary bullae, pulmonary embolism and other diseases, it is not suitable to run marathon.

It is recommended to exercise according to their actual conditions. If you feel fatigue or local pain during running marathon, you should adjust the exercise intensity or stop running in time.