![]() And that means you can go faster, or further, or both. The end result: you can increase your carb intake by up to 50%, giving a total of 75g to 90g per hour, according to High5. Put in the simplest layman's terms, the fructose goes in another way, bypassing the mechanism that usually limits carb intake to 50/60g per hour. High5 say that fructose can deliver more carbohydrate to the muscles, in addition to that provided by the glucose. So what's the thinking? Using glucose-only products as a source of carbohydrate, most cyclists (or any athletes) can absorb only a limited amount - usually around 50g to 60g per hour, depending on weight, age and other similar factors. Whereas many energy products deliver the carbohydrate you need in the form of glucose alone (or with a dash of fructose), Energy Source delivers glucose and fructose in a 2:1 ratio. So where do these improvements come from? According to the boffins at High5, it's all to do with the proportion of glucose and fructose used in this drink. Information on the website gives more details on the science and independent studies that back up these claims. Since then, it's not clear if the actual formula of the drink has changed, but the product has been re-launched with a 'new generation' tag, and new claims regarding performance that are quite astounding.Īccording to the High5 website and other publicity material, Energy Source can help you: 'Go 26% further at the same speed' and provide '15% more power over 40 miles', both with 'no additional training and overnight improvement'. ![]() We reviewed this product back in 2010, and some of what we said still holds. ![]() High5 2:1 Energy Source is carbohydrate-based drink powder, available in small sachets or big tubs. ![]()
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