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www.reference.com/article/causes-low-heart-rate-be3015c7cd24d2b5

Bradycardia, or a slow hear rate, can result from being in good physical condition or from underlying health problems. Very fit, young adult athletes often have heart rates lower than the normal adult range of 60 to 100 beats per minute, according to WebMD.

www.reference.com/article/symptoms-low-heart-rate-5d21aaa8b758bf40

Typical symptoms of a low heart rate include weakness, dizziness, memory problems and shortness of breath, according to Mayo Clinic. These symptoms occur due to an insufficient supply of oxygen to the brain and other vital body organs.

www.reference.com/article/low-should-heart-rate-fdb9b6b8014d2426

In adults, a normal resting heart rate may be anywhere between 60 and 100 beats per minute, according to Mayo Clinic. In general, people with lower heart rates have healthier cardiovascular systems.

www.reference.com/article/mean-low-heart-rate-c04a668127118bae

A slow heart rate can indicate that something disrupted the electrical impulses that control the heart's rhythm, according to Mayo Clinic. A heart rate under 60 beats per minute, called bradycardia, is also normal in some healthy, physically active adults and can be normal during very deep sleep, no

www.reference.com/article/effects-low-heart-rate-806d17133fd915cc

Effects of slow heart rate, or bradycardia, include dizziness, shortness of breath, tiredness and chest palpitations, according to WebMD. People who have slow heart rate may also feel confused or faint.

www.reference.com/article/considered-low-heart-rate-6805fea625b4496a

When a resting heart beats less than 60 times per minute, it is a lower-than-normal heart rate, called bradycardia, states WebMD. A low heart rate can be a sign of fitness, as in athletes and healthy young adults, or a sign of a problem with the heart's electrical system.

www.reference.com/article/risks-having-low-heart-rate-69a9deea096007cf

If a persons's heart rate is lower than 60 beats a minute due to a fault in the heart’s natural pacemaker, the risks include dizziness, fatigue, chest pains, shortness of breath, fainting, seizures or death, reports WebMD. When there are no other underlying conditions, having a low heart rate, also

www.reference.com/article/low-heart-rate-dangerous-c9f87a1c770d1a71

In certain cases, low heart rate, or bradycardia, is dangerous, according to WebMD. It sometimes indicates a glitch in the heart's electrical system. If the bradycardia is severe, the heart does not pump enough blood for the body to carry out its normal functions.

www.reference.com/article/calculate-variable-rates-f6e76f609759791

Variable interest rates are actually two rates added together. The first is a fixed rate called "margin" that is based on the credit worthiness of the borrower. The second rate varies and is tied to the movement of a specified index as stipulated in the loan contract.

www.reference.com/article/high-heart-rate-c820c903ace45086

A high heart rate, known as tachycardia, exists when a person's resting pulse exceeds 100 beats per minute, according to Mayo Clinic. The normal heart beat range for a healthy adult is between 60 and 100 beats per minute.