When I am watching TV or reading newspaper especially in the evening/night why my heartbeat goes slow?

Question

You did not mention how much is your heart rate Normally the heart beats 60 to 100 times per minute. The rate may drop below 60 beats per minute in people who exercise routinely or take medicines that slow the heart. If your heart rate is fast (over 100 beats per minute), this is called tachycardia. A heart rate slower than 60 is called bradycardia. An occasional extra heartbeat is known as extrasystole. Unless your heartbeat goes slower than 40 or 45 regularly all unless you have some symptoms of dizziness syncope you don't have to worry about a little slow heart rate.

Paramjeet Singh · Accepted Answer

You did not mention how much is your heart rate Normally the heart beats 60 to 100 times per minute. The rate may drop below 60 beats per minute in people who exercise routinely or take medicines that slow the heart. If your heart rate is fast (over 100 beats per minute), this is called tachycardia. A heart rate slower than 60 is called bradycardia. An occasional extra heartbeat is known as extrasystole. Unless your heartbeat goes slower than 40 or 45 regularly all unless you have some symptoms of dizziness syncope you don't have to worry about a little slow heart rate.