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2. Does your heart beat faster when you stand or sit up? Learn ...

   www.aol.com/does-heart-beat-faster-stand...

   This is mainly because they have lots of overlapping physical symptoms, like rapid heart rate, dizziness, fatigue, and brain fog, which can make it hard to tell the difference between the two.

3. Palpitations - Wikipedia

   en.wikipedia.org/wiki/Palpitations

   Palpitations occur when a person becomes aware of their heartbeat. The heartbeat may feel hard, fast, or uneven in their chest. [1] Symptoms include a very fast or irregular heartbeat. Palpitations are a sensory symptom. [1] They are often described as a skipped beat, a rapid flutter, or a pounding in the chest or neck. [1]

4. Cardiomyopathy - Wikipedia

   en.wikipedia.org/wiki/Cardiomyopathy

   Cardiomyopathy is a group of primary diseases of the heart muscle. [1] Early on there may be few or no symptoms. [1] As the disease worsens, shortness of breath, feeling tired, and swelling of the legs may occur, due to the onset of heart failure. [1] An irregular heart beat and fainting may occur. [1]

5. Postural orthostatic tachycardia syndrome - Wikipedia

   en.wikipedia.org/wiki/Postural_orthostatic...

   Postural orthostatic tachycardia syndrome (POTS) is a condition characterized by an abnormally large increase in heart rate upon sitting up or standing. [1] POTS is a disorder of the autonomic nervous system that can lead to a variety of symptoms, [10] including lightheadedness, brain fog, blurred vision, weakness, fatigue, headaches, heart palpitations, exercise intolerance, nausea ...

6. Why You Feel That Burning Sensation in Your Legs During Hard ...

   www.aol.com/lifestyle/why-feel-burning-sensation...

   Experts clear up the confusion on lactic acid, the burning sensation you feel in your legs during hard efforts, how to improve lactate threshold.

7. Are you neglecting your 'second heart'? 1 step to ... - AOL

   www.aol.com/news/neglecting-second-heart-1-step...

   The “second heart” only starts pumping when your legs move. That’s a problem when many people sit or stand for hours at work. “The blood flow back to the heart has to fight the force of ...

8. Hypertrophic cardiomyopathy - Wikipedia

   en.wikipedia.org/wiki/Hypertrophic_cardiomyopathy

   The symptoms of HCM include shortness of breath due to stiffening and decreased blood filling of the ventricles, exertional chest pain (sometimes known as angina) due to reduced blood flow to the coronary arteries, uncomfortable awareness of the heart beat (palpitations), as well as disruption of the electrical system running through the ...

9. 8 Common Cardiovascular Diseases for Men & How to Prevent Them

   www.aol.com/8-common-cardiovascular-diseases-men...

   An arrhythmia is an irregular heartbeat that occurs due to a problem with the electrical activity of your heart. ... Peripheral arterial disease is a blockage in the arteries that carry blood away ...