Sunspots Sunspots are dark areas that appear on the surface of the Sun. They are caused by strong magnetic activity within the Sun. Sunspots are not permanent and they can move slowly across the surface of Sun changing size as they move. The appearance of sunspots follows the solar cycle of eleven years. Every eleven years there will be a period of increased sunspot activity.
A heart palpitation is an abnormal beating of the heart AND your heightened awareness of your heart beat. Palpitations can cause your heart to beat fast (tachycardia), slow (bradycardia), flutter, or to even have âskippedâ heart beats (PVCs). Heart palpitations can be caused by electrolyte imbalances, adrenaline, anemia, heart disease, arrhythmias, hypoglycemia (low blood sugar), and of course, anxiety disorders. There are more causes, but the ones listed are common.
Causes of heart palpitations. Heart palpitations are frequently caused by stress or anxiety. In addition to making you feel terrible emotionally, stress can have a physical effect on your body. As a result, stress can cause the nerve endings that control your heart to fire more frequently or irregularly. Anxiety and panic attacks can also trigger palpitations by elevating adrenaline levels. Food and drink can cause heart palpitations. Caffeine, nicotine, and alcohol can all affect your heart rate and may also increase the likelihood of irregular heartbeats. Some medications can cause heart palpitations. These include asthma inhalers, over the counter medications such as pseudoephedrine, and thyroid medications.