For decades, the fitness community has been torn: is high-fat or high-carb the ultimate fuel? A recent experiment put the age-old debate to the test using a pair of identical twins who share 99% of ...

A pair of identical twins embarked on a three-month experiment to compare the effects of two popular diet choices. Ross Turner followed a high-carb diet, while his twin, Hugo Turner, took the high-fat ...

The identical twins both got fitter and leaner, but Hugo said he lacked energy on the high-fat diet. A sports scientist advised eating a balance of carbs and fats that fits with your lifestyle. A pair ...

A pair of identical twins who followed different diets for 12 weeks both got fitter and leaner regardless of whether they ate high-fat or high-carb — but the high-carb twin had more energy. Ross and ...