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I am assuming you mean a heart rate of 52 beats per minute. This is called Bradychardia. Anything under 60 is considered bradychardia. This is not uncommon in very fit people or people who are asleep. The average range for adults is 60-80 beats per minute. Certain drugs such as beta blockers can cause a slow heart rate. It can also be a sign of an impending heart attack.

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13y ago

What else can I help you with?