The benefit of coffee is that it provides energy to the body and wakes up the mind. However, coffee can also cause symptoms such as restlessness, tremors, and increased heart rate in some people. Often, these are similar to the symptoms of anxiety. Dr. Kunal Sood, an anesthesiologist and interventional pain medicine specialist, says that the same process that wakes us up can cause anxiety-like experiences in some people.
Adenosine is a chemical that helps us fall asleep and put the body in a state of relaxation. Caffeine blocks the action of this adenosine. Due to this, fatigue decreases and we feel more awake and alert.
However, at the same time, it is possible that the nervous system may become more active. As a result, symptoms such as increased heart rate, trembling hands, excessive sweating, and feeling restless may appear.
These discomforts may not occur in everyone. The effect of caffeine is different for each person. While one person can drink three or four cups of coffee a day without any problems, for another person even one cup may cause discomfort.