Fasted Exercise Burns 70% More Fat, Study Finds—But Experts Urge Caution

A collaboration between three British universities has found that exercising in a fasted state burns roughly 70 percent more fat than training after a meal — a finding that quietly challenges decades of nutritional orthodoxy around physical performance. The study, conducted in evening hours to mirror real-world habits, measured fat oxidation during moderate cycling and found the body, deprived of immediate glucose, reaches deeper into its reserves. Yet as with many compelling numbers in science, the figure carries conditions: it belongs to a specific kind of person, a specific kind of effort,