Coffee was discovered by goats. Here are nine secrets about coffee

Coffee is one of the world's best-selling beverages, and its effects on humans have always been controversial. Caffeine is a mild stimulant that stimulates our central nervous system, keeping us awake and excited every day.

In addition to coffee, we can also get this chemical from strong tea, cola, and chocolate. Although many people drink coffee or take caffeine every day, few know the specific effects of coffee.

In fact, coffee has certain benefits for our body and mind. Some evidence shows that coffee can improve memory, enhance efficiency, and improve concentration. Experts believe that for an adult, 400mg of caffeine per day is the most appropriate. For pregnant women, it should be halved. For minor children, caffeine should be avoided.

People react differently to caffeine. Some people are extremely sensitive to it, which can cause symptoms such as headaches, stomach pains, insomnia, tension, and palpitations.

Does it make you live longer or shorter? How much coffee is the right amount to drink a day? Is decaffeinated coffee really caffeine-free? Who first discovered coffee?

1. Can caffeine kill you?!

More and more people believe that coffee can kill you, which sounds scary. Experts say it's possible, but you have to drink 80 to 100 cups of coffee in a row.

2. Caffeine is good for your health.

A large number of studies have shown that coffee is good for the liver and reduces the incidence of heart disease, gastrointestinal cancer, and multiple sclerosis. Studies conducted by American biologists show that drinking 2 to 3 cups of coffee a day is more than enough to protect the heart. If you are overweight, they can also increase metabolism and even reduce your appetite.

3. Caffeine can increase sexual desire.

Successful experiments have shown that coffee can indeed increase the sexual desire of laboratory mice. As for humans, experts say that coffee is only effective for those who are not used to drinking coffee.

4. Caffeine can relieve pain.

A small amount of caffeine can relieve muscle soreness. Studies have shown that for people who work in front of a computer for a long time, those who drink coffee regularly have less neck or shoulder pain.

5. Coffee can refresh you.

This is the most common perception of coffee. Health experts recommend not drinking coffee after 3 o'clock, as caffeine can remain in the body for several hours. Caffeine can disrupt the body's biological clock and eliminate your sleepiness.

6. Decaffeinated coffee also contains caffeine.

So-called decaffeinated coffee also contains caffeine, usually 1/10 of the normal coffee content. After we cook the coffee beans, the dissolved caffeine will float on the surface. At this time, an organic solvent, vinyl chloride, can be used to filter out the caffeine, forming the decaffeinated coffee we know.

7. Why is coffee so bitter?

In fact, caffeine is not the main source of bitterness. The bitterness of coffee mainly comes from antioxidants.

8. Roasting and brewing methods determine the taste of coffee

The essential oils in coffee beans evaporate at 200 degrees Celsius. The more essential oils are extracted during the roasting process, the more bitter the coffee tastes and the stronger the coffee aroma. The color of the coffee beans can be used to determine how they are roasted. The color of raw coffee beans is white or even a little green. Through roasting, the color will become darker, brown to black. The length of brewing time also affects the taste and composition of coffee. If you want to extract all the caffeine, the longer the brewing time, the better, and choose a darker roasting method.

9. Coffee was discovered by goats.

According to legend, coffee was first discovered and processed in Africa around 800 AD. An Ethiopian shepherd named Kadi was confused as to why his goats suddenly became energetic and kept him awake at night, so he decided to find out. He found that goats became full of energy when they ate red berries from a tree. He brought the berries to a local priest, who processed the first batch of coffee. After drinking it, the monks could chant all night without falling asleep.