Convinced about blackcurrants yet?
See image to right.
Convinced about the science?
See (this)
Convinced about Beetroot juice yet?
Hang around in the post-race doping testing tents and check out the colour of all the urine samples. (Or just take my word for it…that could get a little weird).
Convinced about Caffeine yet?
Sigh.
Actually if all this natural stuff makes us faster I think I’m going to take up a summer job eating fruit on a farm…ahem, sorry, I mean PICKING fruit on a farm for minimum wage. Once I’ve finished that I’ll sneak off to a neighbouring field to follow the tractors turning up all the root veg.
It might all even be vaguely healthy. Shock. Horror. They’ll be saying water stops dehydration next…nah. #isotonic
Last Updated on 16 January 2026 by the5krunner
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tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors.
