Cyclists finished races 3.2% faster after taking 4–6 mg/kg of caffeine — that’s like shaving 12 seconds off a 60-minute ride. One study found 3 mg/kg worked just as well, suggesting less is often enough. https://s.fitbodyscience.com/a2XKcx
Very strong evidence
Multiple randomized or controlled trials back these claims.
A moderate dose of caffeine might give you a small but real edge in endurance races.
Other research confirms that caffeine in that range does help athletes finish endurance events faster — some studies even saw improvements closer to 3%, which is a bit more than the 2.18% mentioned. The post’s number isn’t wrong, but it’s on the lower end of what’s been observed. Interestingly, one study found the sweet spot might actually be a little lower, around 3 mg per kg, suggesting you don’t need the highest dose to get results. There’s no solid data showing higher doses than 6 mg per kg offer more benefit, so the post’s note about missing evidence there is accurate. The effect isn’t huge, but it’s real and consistent across multiple well-run tests.
If you’re training for a long race, a moderate cup of coffee or caffeine pill might just give you that tiny extra push — no need to go overboard.
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Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.