It is normal to see sinus bradycardia in athletes during sleep?

Sinus bradycardia is a condition where the heart rate is below 60 beats per minute. It is often seen in athletes during sleep due to the increased vagal tone that occurs during sleep. The vagus nerve helps to slow the heart rate and promote relaxation. Additionally, athletes tend to have lower resting heart rates than non-athletes, so they may be more likely to experience sinus bradycardia during sleep. Sinus bradycardia is generally considered a normal finding in healthy athletes and does not require treatment.