Reminder: don't drink coffee before exercise
Researchers at the Center for Human Physiology at the University of Zurich Hospital in Switzerland have found that drinking coffee before exercise may have an adverse effect on the heart because caffeine intake before exercise limits blood flow to the heart muscle during exercise.
The researchers studied 18 healthy young people and found that caffeine did not affect myocardial blood flow when not exercising, but exercise immediately after taking caffeine tablets reduced myocardial blood flow by 22% at normal pressure. The reason is that caffeine blocks specific receptors in the walls of blood vessels, which may hinder the transmission of dilated vascular signals, thereby reducing myocardial blood flow and affecting oxygenation in the body.
Coffee has an exciting effect on the brain and used to be used by some athletes as a stimulant before the competition, but its main function is to speed up the heartbeat and can not guarantee the energy supply of the body in the early stage of exercise.
Studies have shown that eating carbohydrates before exercise can help increase the amount of glucose in the blood, thus stimulating the body's function and helping to increase the intensity of exercise.
FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。
Important Notice :
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As a representative of fashion and delicacy, coffee has been favored by countless beauties. However, drinking coffee without paying attention to time will cause harm to the body of coffee beauties. Coffee contains caffeine, which excites the sympathetic nerves after entering the body, thus eliminating drowsiness, improving blood circulation, and the body also feels warm and does not feel tired, so it has a refreshing effect. But hand in
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