A nutritional composition for enhancing endurance comprising one or more carbohydrates including galactose, fat, protein, fibre, and optional further ingredients, wherein the ratio of carbohydrates: protein is in the range of about 2:1 to about 4:1 and wherein at least 50% of the protein is selected from a group consisting of: whey protein, casein, whey protein hydrolysate, wheat protein hydrolysate and mixtures thereof.