Your heart is hard at work pumping blood and nutrients throughout your body. You can sometimes hear it or even feel it as it pumps at a steady pace.
The heart keeps an even, reliable rhythm that's controlled by your body’s own electrical system. When that system has issues, the rhythm changes. This is known as arrhythmia, which is a problem with the heart's rhythm.
In the movies, you never doubt when a man's having a heart attack. He clutches his chest, screams, or moans, and falls to the ground. If he's lucky, help is on its way.
In real life, the signs aren't always so clear. Some people do experience Hollywood-type symptoms, says Mohamud Daya, MD, an associate professor of emergency medicine at Oregon Health and Science University in Portland. But others don’t. “Some people say they just feel uneasy discomfort or vague discomfort, not pain that really hurts...
Drugs and other stimulants, such as caffeine, tobacco, alcohol, cocaine, amphetamines, and certain over-the-counter and prescription medications
Some heart conditions
Symptoms of a Heart Rhythm Disorder
A typical heart will beat at 60 to 100 times per minute. It can beat faster if you need it to during exercise or in a stressful situation. It can slow down while you sleep. Your heart is used to slowing down and speeding up. This is normal.
When its rhythm is interrupted, you might not notice. Some people, however, can feel it when it happens.