‘Cyclists, be cautious with caffeine’

Expert opinion: Jack James is Professor of Psychology at Reykjavik University, Iceland, where he teaches and researches in health psychology. Here he tells us why cyclists should watch their caffeine intake

Retro Teams espresso cup

Despite exuberant claims about caffeinated energy drinks and gels, controlled trials show that even under ideal conditions caffeine enhances physical performance by only about one to three per cent.

Admittedly, a boost of that magnitude for a finely tuned elite athlete could mean the difference between winning and losing a race.

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