Many people are accustomed to drinking coffee because it can invigorate the mind. In fact, its invigorating effect is not as good as people think.
The components of coffee are no less than a few hundred. Among them, caffeine is undoubtedly the most important, and many people attribute the credit for coffee's invigorating effect to caffeine. Although there is "decaffeinated" coffee, for most coffee lovers, it is by no means "real" coffee.
Theoretically, caffeine does have a certain effect in invigorating the mind. When a person has not rested for a long time, they will naturally feel tired and exhausted. When the body is very tired, it tells the brain through a signaling substance called adenosine. Moreover, the more tired the body is, the more of this substance there is.
However, for the brain to know "I'm tired," this substance must dock with a specific receptor in the brain. And the caffeine in coffee can also bind to this receptor—and block the messenger, which is equivalent to blocking the normal binding of other receptors. This way, the brain cannot receive the signal transmitted by the fatigue substance, so it doesn't feel tired, and it can last for 4 to 6 hours, producing an "invigorating" effect. However, the adenosine substance that causes fatigue has not decreased. Therefore, caffeine's invigorating effect is just deceiving the body's perception.
Two Drinks to Invigorate You
Honey Ginger Tea The pungent components in ginger have a sweating effect, thus warming the body and mind and helping to invigorating. First, cut four or five slices of ginger and put them in a teapot full of water to boil. After it boils, add black tea. When it's warm enough to drink, pour out the black tea, add an appropriate amount of honey, and you can enjoy your honey ginger tea. It is best to choose black tea for its warm nature, which can nourish the stomach and dispel cold. For honey, choose the neutral jujube flower honey. Note, too much ginger should not be added, as it can easily lead to "internal heat."
Lemon Water Lemon contains niacin and organic acids, which not only have antioxidant and beautifying effects, but according to a U.S. research report, a balanced intake of vitamin C and vitamin E in lemon helps to strengthen memory and improve reaction flexibility. A glass of sour lemon water can not only eliminate sleepiness but also help to clear the mind, improve eyesight, and enhance memory.