What if caffeine makes you sleepy

This drop in blood sugar levels causes a sleepy, sluggish feeling. A sugar crash can also cause anxiety, mood swings, dizziness, and hunger. To prevent these effects, try to limit the amount of sugar you add to your coffee and the number of sugary drinks you consume each day. If you develop a sugar crash, you can counteract these effects with a healthy snack, such as nuts, seeds, hard-boiled eggs, or yogurt.

Over time, avid coffee drinkers may build-up caffeine tolerance. Caffeine prevents adenosine from binding with receptors. However, to combat this, the body may begin to produce more adenosine receptors.

One study found that physically active adults began to experience fewer caffeine effects after 15 days of regular consumption. However, research on caffeine tolerance is still inconclusive, as other studies suggest regular consumption does not change the rate of absorption or metabolism.

A recent study found that several coffee samples were contained with mycotoxins , such as aflatoxin B1 and ochratoxin A. Although these amounts are below the legal limit and deemed safe for human consumption, other studies have found that mycotoxins can lead to chronic fatigue syndrome. Frequently Asked Questions What happens to your body when you stop drinking coffee? For those who regularly drink coffee, stopping abruptly can lead to a caffeine withdrawal, which can lead to several uncomfortable side effects, including sleepiness, headaches, nausea, and irritability.

A gradual decrease in caffeine consumption is a safer alternative. Eventually, you will decrease your consumption completely and have fewer side effects than if you stopped all at once.

Caffeine can raise blood levels and elevate the heart rate. However, research shows these effects are temporary and are not detrimental to your heart health or cholesterol levels. Those with heart disease and high blood pressure may want to discuss caffeine consumption with their doctor, since high doses of caffeine may be dangerous for these individuals. Since caffeine is a stimulant, it can cause adverse effects for those with anxiety. For those with anxiety, even minor things can trigger this response.

The consumption of caffeine can make this reaction even more dangerous and trigger an anxiety attack. The body begins to absorb caffeine immediately. Since it passes through the tissue lining the mouth, throat, and stomach so quickly, most individuals feel the effects of coffee fairly quickly, in about 15 to 20 mins.

Studies show that some individuals may feel the effects of coffee up to 8 hours after consumption. This means your afternoon coffee could cause you to feel active and alert well past your bedtime. Therefore, it is best to avoid caffeinated beverages after 2 p. This stretch of time allows your body to metabolize caffeine and keep it from disrupting your sleep. When you go to the bathroom, your body is losing water.

Once your body loses water, your blood thickens. Thicker blood moves slower through your arteries and veins, much like thick molasses takes the cake in a slow drip. As a result of your blood slowing down, less oxygen is delivered to your body. Less oxygen causes you to become sluggish and lazy. When we feel sluggish and lazy, what better way to amp ourselves back up other than to reach for some more coffee?

And the cycle begins again. Older Blogs Newer Blogs. Let's drink coffee and throw things at happy people. Get wired with us. The body rapidly absorbs caffeine, so people may feel its effects within minutes. Once the body fully metabolizes the caffeine, its effects will wear off. The length of time caffeine stays in the body varies from person to person. Although it blocks adenosine receptors, it does not affect the production of new adenosine molecules.

When caffeine wears off, adenosine molecules can bind to their receptors, which can cause sleepiness. People who regularly consume coffee and other caffeinated beverages can develop a tolerance to it.

Since caffeine blocks adenosine receptors, the body produces more adenosine receptors to counteract the effects of frequent caffeine consumption. In one small study , researchers examined the effects of continuous caffeine consumption on the cycling performance of 11 physically active adults. At the start of the study, the participants had higher heart rates and exerted greater cycling power after drinking caffeine.

After 15 days, however, the effects of the caffeine began to decrease. Given these results, it appears that people who regularly consume caffeine may build up a tolerance to its stimulant effects. However, other research has suggested that continuous exposure to caffeine does not affect how the body absorbs or metabolizes it. Many human and animal studies suggest that compounds inside coffee may improve glucose metabolism and reduce the risk of type 2 diabetes. However, the adverse effects of caffeine may negate the beneficial effects of drinking coffee.

According to a meta-analysis , caffeine can increase blood sugar levels by temporarily reducing insulin sensitivity. In a small study , researchers observed that consuming mg of caffeine adversely affected glucose metabolism in 10 healthy males with excess weight. These findings suggest that caffeine, not coffee itself, can impact glucose metabolism, which can raise blood sugar levels. People with high blood sugar may experience headaches , fatigue, trouble concentrating, increased thirst, or frequent urination until their blood sugar levels return to normal.

The sections below discuss a few possible effects of drinking coffee. The authors of a study recommend that people stop drinking coffee at least 6 hours before they plan to fall asleep. Also, according to one study , researchers reported an association between higher caffeine intake and more severe insomnia in middle school students in South Korea.

For example, high doses of caffeine above mg can cause jitteriness and nervousness. In people with panic disorders and depression , high doses of caffeine can trigger anxiety-related symptoms. There may be temporary increases in heart rate and blood pressure after a person drinks caffeinated coffee. However, current research suggests that mild-to-moderate coffee consumption may protect heart health.

In a study involving individuals in Brazil, researchers found evidence to suggest that consuming one to three cups of coffee per day may reduce risk factors for cardiovascular disease in a population.