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The Effect That Caffeine Has On Sporting Performance

Lily Hitchings

Caffeine is the most widely consumed supplement within the sporting industry, due to its performance enhancing benefits. Whether that's a cup of coffee, energy drink or even in tablet form, many athletes use this to give them an extra edge in their performance. But how effective is this supplement in enhancing our sporting performance?


What does caffeine do to your body?

Caffeine is a central nervous system stimulant, which means it speeds up the processes in your brain and body. When consumed, caffeine blocks the effects of adenosine, the body's chemical messenger that makes you feel tired. This can lead to improved alertness, concentration and energy levels. But its benefits don't stop there, especially when it comes to sporting performance.


Performance benefits of Caffeine:


Infographic on caffeine's effects on sports: increased adrenaline, enhanced endurance, better focus, and increased strength.
Sporting Performance Benefits of Caffeine
  • Increased adrenaline

    Caffeine stimulates production of adrenaline, which increases heart rate, blood flow to muscles and energy availability. This can help sporting performance, especially in high intensity activities.


  • Enhanced Endurance

    Research has shown that caffeine can delay fatigue, making it easier to keep going during endurance based sports like running, cycling or swimming.


  •  Increased Strength and Power Output

    Caffeine doesn't just help with endurance, it can also increases strength and power output. It can help athletes to lift more, sprint faster and exercise for longer durations before fatigue.


  • Better Focus and Reaction Times

    For sports that require quick thinking and split second decisions, like tennis or basketball, caffeine can improve reaction times and mental clarity, making it easier to stay alert during long or intense games.




Drawbacks of Caffeine for athletes

Whilst caffeine is a performance enhancer, it doesn't come without its drawbacks.

  • Anxiety

  • Dehydration

  • Headaches

  • Insomnia

  • Irritability

  • Increased heart rate


Best times and ways to use caffeine for sporting performance


  • Pre-Workout:

    The most effective time to consume caffeine is about 30-60 minutes before exercise.


  • Post-exercise:

    Avoid high doses—caffeine can interfere with sleep and recovery.


  • Energy drinks and supplements:

    There are various caffeine based supplements available for athletes from pre -workout formulas to energy gels and chews. Some athletes prefer these as they are more easily digestible than a cup of coffee before exercise.


  • Caffeine absorption speed:

    The timing window can vary based on the type of caffeine. Gummies and gels acting faster in 15-30 minutes, comapred to coffee or tablets which take longer to see effects, 45-60 minutes.


  • Avoid Late Use:

    Consuming caffeine too late in the day (especially post 4–6 PM) can disrupt sleep and recovery.


  • Dosage:

    3–6 mg per kg of body weight is optimal; higher doses don’t increase benefits and may cause side effects.



If you are looking for more specific nutrition advice to reach your peak athletic performance we are here to support you at Nutrition and Co. Book a free WhatsApp discovery call today! Or download our free sports nutrition recovery guide















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