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Caffeine: How does it affect your body and performance?
ARTICLE BY THE NUTRIBOOST TEAM
Caffeine: The benefits and pitfalls
Caffeine is the most widely used stimulant in the world. From your morning coffee to pre-workout supplements, it’s everywhere. But do you really know how it affects your body?
What is caffeine and how does it work?
Caffeine acts mainly on the central nervous system. It inhibits the action of adenosine, a neurotransmitter that makes you feel tired. The result? Increased alertness, improved concentration, and a temporary reduction in feelings of fatigue.
The benefits of caffeine
- Increased energy and focus:
It can help you stay focused and productive, especially when you’re feeling down.
- Improved athletic performance:
Many athletes—both professional and amateur—use caffeine as a pre-workout tool. Research shows that caffeine enhances endurance, strength, and perception of fatigue during exercise. It improves endurance in aerobic activities such as running or cycling. It enhances power and explosiveness in strength training. It reduces the perception of fatigue, making you feel like you can keep going longer.
- Increase in metabolism:
It can temporarily accelerate the basal metabolic rate, slightly helping with fat breakdown. It increases the mobilization of fatty acids, which promotes the use of fat as fuel.
Tip: The ideal dose is approximately 3–6 mg of caffeine per kilogram of body weight, 30–60 minutes before exercise.
The pitfalls of caffeine
Tolerance: With frequent use, your body adapts and you need a larger amount for the same effect.
Insomnia and nervousness: Consuming it late in the day can affect your sleep and make you more restless.
Dehydration: It is a mild diuretic – not as much as is claimed, but in large doses it can increase fluid loss.
Undesirable effects on the stomach: Especially if consumed on an empty stomach.
How much caffeine is enough?
The safe daily intake for the average adult is around 300-400mg (approximately 3-4 cups of coffee). However, tolerance varies from person to person. It is best to avoid excessive consumption and not to consume caffeine 6-8 hours before bedtime.
Forms of caffeine – it’s not just coffee
Caffeine is not only found in coffee. There are many sources—some more potent and controllable than others:
Coffee: 80–120 mg per cup (depending on the variety and method of preparation).
Tea: Contains less caffeine but also theanine, which reduces nervousness.
Energy drinks: Rich in caffeine but also sugar or other stimulants (use with caution).
Supplements/Pre-workout: Concentrated forms of caffeine, often combined with other energy-boosting ingredients.
You can find pre-workout supplements in our store here https://nutriboost.gr/category/pre-workout-ydatanthrakes/
Caffeine in pills: Useful for those who want precise dosages without liquids or calories.
Caffeine detox – is it necessary?
If you notice that:
You need 3-4 coffees to “wake up,”
You have frequent headaches when you don’t consume it,
You don’t feel the same energy boost as you used to…
Perhaps your body has developed a tolerance. A short break of 5–7 days (or reducing the amount) may restore your sensitivity to caffeine.
Caffeine and sleep – the invisible trap
Even if you think you sleep well, caffeine can affect the quality of your sleep. It reduces the deeper stages of sleep (slow wave sleep), which affects physical recovery and hormonal balance (e.g., testosterone, growth hormone).
Tip: Stop consuming caffeine at least 6–8 hours before bedtime, especially if you train hard.
Caffeine: The benefits and pitfalls
In conclusion
Caffeine can be a powerful ally when used correctly. It gives you a boost during the day, enhances your workout, and helps you concentrate. But, like any tool, it needs to be used in moderation. Learn to “listen” to your body and adjust your consumption according to your needs.