Does Caffeine Actually Make You a Better Athlete?

For many athletes, caffeine is part of the pre-training or pre-match routine.

A coffee before the gym.

A caffeine gel before a game.

An energy drink before a late-night session.

But is caffeine genuinely improving performance, or does it simply make you feel more awake?

The research suggests that caffeine can improve several aspects of exercise performance, however, the most effective strategy may not be about consuming as much caffeine as possible. Instead, dose, timing, individual response and recovery all matter.

How Does Caffeine Work?

Caffeine is a stimulant that primarily works by blocking adenosine receptors in the brain. Adenosine contributes to feelings of fatigue and sleepiness. By blocking its effects, caffeine can increase alertness and reduce perceived exertion of exercise. This may be one reason why caffeine improves exercise performance.

Importantly, caffeine isn’t simply “giving you energy”. It can alter how you perceive and respond to exercise, potentially allowing you to maintain a higher level of performance for longer.

How Much Caffeine Do You Need?

This is where things get interesting.

Caffeine research has traditionally focussed on doses around 3–6mg/kg of body mass. However, recent research suggests that lower doses may also be effective.

A 2026 systematic review and meta-analysis of 48 studies involving 689 participants found that both low doses (1.3–3mg/kg) and moderate doses (4–6mg/kg) both improved aerobic time-trial performance compared with placebo. Moderate doses produced a more consistent effect, but lower doses were still associated with improved performance (Martins et al., 2026).

2mg/kg = 150mg
3mg/kg = 225mg
4mg/kg = 300mg
6mg/kg = 450mg

This highlights an important point — more caffeine does not automatically mean better performance.

Team Sport Athletes

Sports such as soccer, rugby and basketball all require athletes to repeatedly sprint, jump and perform high-intensity actions while fatigued. A systematic review examining caffeine during team-sport performance found improvements in several physical measures, including sprint velocity, jump performance, agility and total running distance (Salinero et al., 2019). Another systematic review in 2024 also found that caffeine increased high-intensity actions during intermittent sports, including sprints, accelerations and decelerations (Diaz-Lara et al., 2024). So, for a team sport athlete, such as a footballer, the potential benefit isn’t necessarily that caffeine will suddenly make them a faster athlete. It may help them produce or maintain more high-intensity actions when fatigue starts to build.

What About Strength and Power?

Caffeine isn’t just an endurance supplement.

A 2025 systematic review and meta-analysis found that acute caffeine ingestion can improve measures of muscular power, including movement velocity and power output during resistance training (Xiao et al., 2025). This would be relevant for activities where producing force quickly is important — such as jumping, lifting or explosive movements.

However, it’s worth making a distinction: caffeine may enhance a training session, but is not responsible for the adaptations created by training. Progressive overload, adequate nutrition and recovery remain the foundations of performance development.

When Should You Consume Caffeine?

Timing matters. Different delivery methods can influence how quickly caffeine becomes available, so the practical strategy may depend on the athlete and the situation.

Caffeine can be consumed through:

Caffeine tablets/capsules
Gels
Coffee
Energy drinks
Caffeinated sports drinks
Chewing gum

For traditional caffeine consumption, athletes often consume caffeine approximately 60 minutes before exercise. Evidence from team-sports research supports the use of moderate doses (3–6mg/kg) approximately 60 minutes before exercise (Arguedas-Soley et al., 2022). Athletes should avoid experimenting with caffeine for the first time on match day. Experiment during training and see how you respond.

But Here’s the Catch: What Happens to Your Sleep?

This may be the most important part of the caffeine conversation. Imagine an athlete has a 7:30 pm match. They consume caffeine prior to the match, performance improves slightly, however they struggle to sleep after the match. Therefore, recovery is compromised.

Was the caffeine strategy actually beneficial?

A 2025 systematic review and meta-analysis specifically examined caffeine consumed before late-afternoon or evening training and competition in athletes. The findings indicated that evening caffeine consumption can negatively affect aspects of subsequent sleep, although the size of the effect depends on factors such as the dose and timing (Kocak et al., 2025).

This creates an important performance-versus-recovery question.

For some athletes, a small performance benefit is worth sacrificing sleep. For others, it is not. That is why caffeine strategies should be individualised.

Side Effects?

Caffeine doesn’t work perfectly for everyone.

Caffeine ingestion can be associated with several side effects including anxiety, nervousness, abdominal discomfort, increased heart rate and insomnia.

This doesn’t mean caffeine should be avoided completely. It means athletes need to find the lowest effective dose that provides a worthwhile benefit without creating problems.

So, Does Caffeine Actually Make You a Better Athlete?

Caffeine is one of the most well-researched ergogenic aids available to athletes. The research provides strong evidence that caffeine can improve aspects of endurance, high-intensity exercise, sprinting, jumping and power.

Caffeine can make you a better-performing athlete — but it won’t make you a better athlete by itself.

You can’t out-supplement:

Poor carbohydrate availability
Inadequate protein intake
Poor hydration
Insufficient recovery
Lack of sleep
Poor training

Sports nutrition isn’t about finding the biggest performance boost at any cost. It’s about finding the strategy that provides the best balance between performance, recovery and long-term athlete health.

Caffeine can help you perform better. The skill is knowing when — and how much — to use.

References

Arguedas-Soley, A., Townsend, I., Hengist, A. and Betts, J.A. (2022) ‘Acute caffeine supplementation and live match-play performance in team-sports: A systematic review (2000–2021)’, Journal of Sports Sciences, 40(7), pp. 717–732.

Diaz-Lara, J., Nieto-Acevedo, R., Abian-Vicen, J. and Del Coso, J. (2024) ‘Can caffeine change the game? Effects of acute caffeine intake on specific performance in intermittent sports during competition: A systematic review and meta-analysis’, International Journal of Sports Physiology and Performance, 19(11), pp. 1180–1196.

Kocak, A., Georgousopoulou, E., Knight-Agarwal, C.R., Matthews, R. and Minehan, M. (2025) ‘The effect of consuming caffeine before late afternoon/evening training or competition on sleep: A systematic review with meta-analysis’, Sports, 13(9), article 317.

Martins, G.L., Aparecido, J.M., Marquezi, M.L., Frientes, C.S., Miedes, L.R., Fornel, M.S., Fernandes, T. and Lancha, A.H. Jr. (2026) ‘Dose-response effect of oral caffeine use on aerobic exercise performance: A systematic review and meta-analysis’, Nutrients, 18(12), article 1989.

Salinero, J.J., Lara, B. and Del Coso, J. (2019) ‘Effects of acute ingestion of caffeine on team sports performance: A systematic review and meta-analysis’, Research in Sports Medicine, 27(2), pp. 238–256.

Xiao, Y., Ding, L., Xu, Z., Liu, J., Guo, L., Barnes, M.J., Cao, Y. and Girard, O. (2025) ‘Effects of acute caffeine intake on muscular power during resistance exercise: A systematic review and meta-analysis’, Frontiers in Nutrition, 12, article 1686283.

About The Author

Ryan is a Sports Science graduate with an MSc in Sport and Exercise Nutrition from Ulster University. With a lifelong passion for sport and exercise, Ryan developed a particular interest in how nutrition can be used to enhance performance, optimise recovery and support athletic development. His academic and practical experience has provided a strong foundation in sport nutrition, hydration, body composition and exercise science. Ryan is passionate about taking the latest scientific research and turning it into practical, evidence-based strategies that athletes can apply in everyday training and performance.