High5 EnergySource 4:1 med superkulhydrater (1,6 kg bøtte)

As the name suggests, this drink from High5 contains carbohydrate and protein in a 4:1 ratio. Confusingly the carbohydrate element is made up of another 4:1 ratio - 'Super Carbs' glucose and fructose - designed to increase energy delivery to working muscles and reduce dehydration.

We're told the protein element boosts available energy for endurance athletes. With antioxidant and electrolyte compounds too, there's a mouthful of science to digest, so it's a good thing citrus and summer fruit flavours taste good. It's a bit on the pricey side though.

Mind-boggling amounts of technology for a drink. It does the trick, but the cost is a bit prohibitive

This drink is four parts carbohydrates to one part whey protein. High Five claims that this is combination gives up to 29% increase of carb take up over a straight carb drink because the protein causes insulin to be released, resulting in more carbohydrate beingsent to the muscles when you're riding. The added protein in the drink also stops protein being used to fuel muscles while riding during longer events, when your energy levels start to run low.

A great tasting long distance energy fuel