It stimulates the brain and central nervous system, which increases alertness. Sudden drops in your blood oxygen levels can raise your blood pressure and strain the cardiovascular system.Ĭaffeine is a natural stimulant commonly found in coffee, tea, and cacao plants. Research from 2018 suggests that sleep apnea increases the risk of an irregular heart rate. It occurs when your throat muscles relax, causing your airway to narrow or close. Obstructive sleep apnea is the most common type. Sleep apnea is a sleep disorder in which breathing repeatedly stops and starts while you are asleep. If you have AFib, you may also experience: But in some cases, it can increase the risk of heart failure and may require treatment. It happens when the heart’s upper chambers beat out of coordination with the lower chambers.ĪFib usually causes a fast heart rate, but some people feel a fluttering or thumping in the chest.ĪFib itself isn’t usually life threatening. Atrial fibrillationĪtrial fibrillation (AFib) is the most common type of irregular heart rate. Refined carbohydrates, such as white bread or pasta, can have the same effect, especially in people with diabetes. Some people also get what’s known as a “ sugar headache.” This triggers the release of stress hormones.Īlong with a racing heart, you may also begin to sweat. Your body may interpret an increase in blood sugar and energy as stress. This signals your pancreas to release insulin and convert what it can to energy. Having too much sugar can cause a blood sugar spike. The sugar you consume is absorbed into your bloodstream after passing through your small intestine. These symptoms should clear up as your hangover subsides. You may have other symptoms of a hangover hours after drinking. A 2017 study linked binge drinking and long-term heavy alcohol use with different types of cardiac arrhythmia, especially sinus tachycardia. The more you drink, the faster your heart beats. If you’re waking up with your heart racing after drinking, chances are you’ve had too much.ĭrinking alcohol increases your heart rate. Other common symptoms of anxiety can include: If you have depression or anxiety or are under a lot of stress, you may wake up with a racing heart from time to time. A higher level of anxiety may cause more intense symptoms. These hormones, in turn, can increase your heart rate and blood pressure. Stress and anxiety trigger the release of stress hormones. Here’s a look at some common ones and other symptoms to watch out for. Having a fast heart rate in the morning can have many causes.
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