As a medical professional, I can tell you that there are several reasons why someone might experience irregular heartbeats. Irregular heartbeats can be caused by a variety of factors, including but not limited to: 1. Premature Beats: These are extra or skipped heartbeats that can occur in an otherwise healthy heart. They are usually harmless and don't typically cause symptoms, but they can be felt as palpitations or skipped beats. 2. Heart Disease: Conditions such as coronary artery disease, heart valve problems, or a previous heart attack can lead to arrhythmias. 3. Stress: Emotional or physical stress can trigger an irregular heartbeat. 4. Overexercising: Intense physical activity can sometimes cause an arrhythmia, especially in people with underlying heart conditions. 5. Caffeine or Nicotine: Stimulants like caffeine from coffee or tea, and nicotine from smoking can also provoke an irregular heartbeat. It's important to note that while many irregular heartbeats are not serious, some can be a sign of a more serious condition and should be evaluated by a healthcare provider. read more >>

Premature Beats. Most irregular heart rhythms involve extra or skipped beats. These types of arrhythmias are harmless and usually don't cause symptoms. ... But they also can happen as a result of heart disease, stress, overexercising, or too much caffeine or nicotine.read more >>