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
My favourite kit and nutrition
- Maurten — the race nutrition trusted by elite athletes. Gels and drink mix engineered to be easy on the stomach.
- Garmin 90-degree charging adapter — the small adapter that keeps your charging cable tidy at the stem. Essential for race day.
- Garmin charging puck — the fastest and most reliable way to top up your Garmin before a session.
- Ravemen FR300 — front light that mounts directly under your Garmin or Wahoo head unit. Keeps your bars clean and your beam pointed where it matters.
- Garmin Varia RTL515 — radar rear light that alerts you to vehicles approaching from behind. Pairs with your Edge or Garmin watch.
- Stryd — the footpod that brings running power to your Garmin. The single most useful running upgrade I have made.
- Favero Assioma Pro RS2 — the power meter pedals most serious cyclists end up choosing. Accurate, easy to move between bikes.
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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. ID
