Why do I get more sleepy when I drink coffee?

Is it strange?

Photo by Nathan Dumlao on Unsplash

Coffee is not a stimulant. The active ingredient in coffee is caffeine, which is also found in abundance in tea. Caffeine is not essentially a stimulant and does not make your nerves or muscles more active, so drinking coffee does not make you more energetic.
Caffeine makes a person less sleepy because it interferes with the rest of the brain. The person can feel sleepy…