According to the US Alcohol and Drug Foundation, "caffeine is a stimulant drug, which means it speeds up the messages that pass between the brain and the body." It works by increasing the production of energy in the central nervous system, in the muscles and, in general, increases the metabolic rate. In moderation, it can help boost mood and mental and physical performance, explains Erika Schwartz, physician. Caffeine is most commonly found in "coffee, black tea, energy drinks and even chocolate."
Up to 400 milligrams of caffeine a day is considered safe for most adults, according to Dr. Schwartz, but each person’s sensitivity to the substance varies and your body will warn you with signs when you overdo it. Here are some of them:
1. Increased anxiety
"When you consume a lot of caffeine, your blood pressure rises," says Dr. Schëartz. This can cause feelings of anxiety, nervousness, anxiety and a faster heartbeat. Because caffeine speeds up your central nervous system, it can cause an increased release of adrenaline that can make you shiver, feel tired and so on.
2. Sleep problems
Due to its effect on the central nervous system, caffeine can make it difficult for you to sleep. Since it takes an average of five to six hours for half of the caffeine you consume to be eliminated from your body and about a day for it to completely clear your system, it is best to consume a moderate amount of caffeine as early in the day as possible. to be calm ".
3. Stomach aches
Too much caffeine can cause heartburn, nausea, diarrhea and so on.
4. Frequent urination
Caffeine can act as a mild diuretic, meaning it can cause dehydration. If you are drinking a cup of coffee, try eating something light in advance to slow down the movement of fluid through your body.
5. Headache
While moderate caffeine consumption can sometimes help relieve a headache, too much caffeine consumption can result in persistent headaches throughout the day.
Source: Well & Good
