What Does Coffee Do to You?

crazy by Editorial Staff | Updated on April 26th, 2023

Do you love the taste of coffee? Do you crave the familiar warmth of your favorite mug in your hands? Are you curious about what drinking coffee does to your body and mind?

If so, then this blog post is for you! We’ll explore all the ways that coffee affects us, from physical impacts to mental benefits.

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The caffeine in coffee

Caffeine is a natural stimulant found in the leaves and fruits of some plants, including coffee beans. It acts as a central nervous system stimulant, increasing alertness and focus while potentially making you more irritable or anxious.

While caffeine can provide a temporary energy boost, too much can cause heart palpitations and other unpleasant side effects. The potential risks of consuming too much caffeine should be considered, but many people still enjoy the benefits of moderate caffeine intake from coffee.

The benefits of caffeine

While there are potential risks associated with consuming too much caffeine, when used in moderation, it can be a great way to get a jolt of energy without using sugar or other unhealthy ingredients.

Increase alertness and concentration

Not only does caffeine give people an energy boost, but it can also help to improve focus and concentration. Caffeine stimulates the brain and blocks receptors for adenosine, a neurotransmitter that makes you feel sleepy. This allows you to stay alert and focused for longer periods. Caffeine has been shown to have a positive effect on alertness and concentration.

Studies have demonstrated that it can increase selective attention, sustained attention, and overall cognitive function.  Overall, coffee can help improve your concentration and alertness to get more done throughout the day.

Improve memory and cognitive function

Coffee has been linked to improved memory and cognitive function. Studies have shown that regular coffee/caffeine consumption can help reduce cognitive decline in older adults, particularly women, while also improving memory performance on an explicit cued–recall task in the early morning. 

Research suggests moderate coffee/caffeine consumption may help improve long-term memory and thinking ability. However, it is important to note that these effects may vary based on the individual and the amount of coffee consumed. Hence, it is best to consult a medical professional before changing your coffee consumption.

Boosts physical performance

Shot of sporty woman listening to music with her smartphone whiledrinking coffee in the kitchen at home.

Caffeine has been shown to have positive effects on physical performance. Studies have shown that 3 to 13 mg of caffeine per kilogram of body mass can improve exercise performance.

It has been suggested that caffeine stimulates the central nervous system to reduce fatigue and drowsiness and increases the use of energy substrates during exercise.

Furthermore, research indicates that coffee may be used as an alternative to caffeine to improve cycling and endurance performance when consumed 45-60 minutes before exercise.

Therefore, it is clear that caffeine can benefit physical performance when consumed in moderation.

Reduces risks of certain diseases

Coffee has been linked to numerous health benefits, such as a reduced risk of type 2 diabetes, liver disease, heart disease, and neurological diseases. Studies suggest moderate coffee intake can lower the risk of certain liver and endometrial cancers.

Coffee is packed with antioxidants that may help protect the body from damage caused by free radicals. It also contains various other active components that could have potential therapeutic benefits.

Helps with weight loss

Coffee can be a great tool for weight loss, thanks to its ability to help boost metabolism. Chlorogenic acid in coffee helps break down fat more efficiently, and caffeine can help release fat from the fat tissues. It can also make you feel fuller, reducing your overall calorie intake.

However, it is important to remember that drinking coffee alone won’t magically lead to weight loss. You’ll need to pair your coffee with a healthy diet and exercise plan for the best results.

A sad looking Coffee Cup on a brown rustic table.

The negative effects of caffeine

It is important to note that drinking too much coffee can have adverse effects on the body, such as restlessness, headaches, and even nausea and vomiting. Caffeine can also affect how the body absorbs calcium, raising concerns about its potential to cause osteoporosis.

Ultimately, caffeine is a powerful stimulant that should be used responsibly to ensure its effects are beneficial rather than detrimental to your health.

Reduces total sleep time and quality

Caffeine is a stimulant that can have an impact on sleep. Studies have shown that drinking caffeine too close to bedtime can reduce total sleep time and efficiency and worsen perceived sleep quality.

Caffeine can also reduce the amount of slow-wave sleep, which is important for restoring energy levels and consolidating memories. Therefore, if you want to improve your sleep quality, it is advised to limit your caffeine intake in the hours leading up to bedtime.

It may have side effects

Regardless of its potential benefits, consuming too much caffeine may lead to negative side effects. Excessive coffee consumption can lead to jitteriness, anxiety, heart palpitations, and even exacerbated panic attacks. 

Pregnant women or sensitive to caffeine should be especially cautious as it can temporarily raise blood pressure and cause headaches. 

Caffeine can also affect how the body absorbs calcium, raising concerns about its potential to cause osteoporosis. Ultimately, caffeine is a powerful stimulant that should be used responsibly to ensure its effects are beneficial rather than detrimental to your health.

Additionally, too much caffeine can aggravate pre-existing conditions such as irritability, insomnia, and a rapid and irregular heart rate. It’s important to remember that caffeine’s effects vary from person to person; therefore, it’s best to monitor your specific reactions when consuming coffee.


Coffee is a great source of caffeine that can benefit your physical and mental health.

Moderate consumption of caffeinated beverages, including coffee, is generally safe and can improve alertness, concentration, memory, and cognitive function. It may also help to boost physical performance and reduce the risk of some diseases.

However, too much caffeine can adversely affect the body and mind, causing insomnia, anxiety, headaches, and digestive issues. Therefore, monitoring your caffeine intake and consuming coffee in moderation is important.

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Disclosure: No compensation or free products were received in exchange for writing this review.


Editorial Staff

The editorial staff at Crazy Coffee Crave is a team of coffee enthusiasts & Baristas who enjoy the one thing we all think about as soon as we get up in the morning. Trusted by thousands of readers worldwide.