Could ketone energy drinks boost your triathlon performance?

An energy drink created from ketones, rather than carbs or fat, improved performance by 2% when tested on elite cyclists, say scientists. The drink allowed the cyclists to add up to 400 metres of distance (2% increase) to their workouts.


The supplement, which will be commercially available within the year, works by temporarily switching the primary source of cellular energy from glucose or fat to ketones — molecules derived from fat that are known to be elevated in people consuming a low-carb, Atkins-like diet.

In a study of 39 cyclists, including some former Olympians, they found that the muscles use ketones when provided in the diet, and that this uptake increased in proportion to the intensity of exercise.