How Long Does Caffeine Stay in Your Body

Are you an entire coffee addict? Are you the one who rely on coffee to keep you going during the day? Are you have trouble sleeping at night? Take care; you should watch your coffee intake. Understanding when to drink coffee as well as how long caffeine stay in your body is your first priority.

Then, how long does caffeine stay in your body? Or to say,  how long does coffee keep you awake? To know this, you need first know what coffee is and why coffee keeps you awake.

What is Coffee?

The journey of coffee from seeds to cups is very hard and long. To put it simply, coffee is actually a coffee seed. Coffee is complicated. Besides the most known caffeine, coffee also contains a variety of compounds, like antioxidants and diterpenes. These contribute not only to the unique flavor of coffee but also to the well-researched effects on human body.

Why does Coffee Keep You Awake?

Coffee contains caffeine, which is a mild central nervous system stimulate. Whenever you are awake, a chemical called adenosine slowly accumulates in your brain, which makes you feel tired. The caffeine in your coffee is incredibly similar to adenosine in structure. If your adenosine levels are reduced, it will be easier to let more caffeine to fill in the receptors. In this way, you will feel awake.

How Long Does Caffeine Stay in Your Body ?

From the first sip of coffee, the caffeine is entering your bloodstream. You may begin to feel the effects of coffee within 15 minutes. According to some studies, caffeine reaches its peak level in the blood within one hour. And the half-life of caffeine is anywhere from 4 to 6 hours. This means if you consume 200 mg of caffeine at 12 PM, you would still have 100 mg in you at around 5 PM. If you consume coffee every day, your body can build up a tolerance. Thus you may feel that initially you need only one cup of coffee to keep awake for one or two hours, but now you need two cups of coffee. Even, you may feel sleepy after drinking coffee. 

To avoid caffeine tolerance built-up, you need:

• Drink moderate coffee per day. Do not have too much caffeine intake. 400 mg caffeine intake is a person’s limits.
• Drink coffee at the right time. Avoid caffeine intake 6-7 hours before bedtime.