After drinking coffee, how long does it take for caffeine to be metabolized in the body?

Coffee is a drink that everyone is familiar with. Its special taste and ability to refresh the mind have made more and more people fall in love with it. When you are at work in the afternoon, it is easy to feel sleepy. Drinking a cup of coffee can refresh the mind and improve work efficiency. It has many benefits. So, after drinking a cup of coffee, how long does it take for the caffeine to be metabolized?

Let's first look at the root cause of how coffee stimulates us and makes us excited. In fact, that is because coffee contains a central nervous system stimulant called caffeine. There is a chemical called adenosine in our brain, which can produce a substance that makes us sleep when we are awake. The longer we are awake, the more adenosine there is in the body, and caffeine is the enemy of adenosine and will reduce its sleep-inducing effect.

Simply put, caffeine stimulates our brain nerves because it inhibits the body's ability to produce sleep substances, which can help us stay awake. So how long does it take for caffeine to be excreted?

Caffeine takes a long time to be completely metabolized, generally 4 to 6 hours, which means that after we drink a cup of strong coffee, we can feel some stimulating effects of caffeine on our body for a long time. But as time goes by, the side effects of caffeine on our body will gradually disappear.

But some people are resistant to caffeine, that is, they can drink coffee at any time and still sleep soundly. If this is the case, I can only say congratulations, coffee has no side effects on you.

If you don't have trouble falling asleep and have plenty of energy during the day, it's okay to drink coffee in the afternoon or evening.

However, adequate sleep is the foundation of good health, and if you're not sure whether coffee is affecting your sleep, or you're not sure whether caffeine is causing insomnia, the first thing to do is to stop drinking coffee.

Generally, we recommend that if you want to drink coffee, it is best to drink it at least 8 to 10 hours before going to bed, so that you can have two half-lives. At the same time, we also recommend that if you usually drink a pack of coffee, it is best not to drink 2-3 packs, otherwise it means that your body will metabolize more caffeine than normal, thus offsetting the benefits of early caffeine intake.