Eating breakfast before exercise may burn more calories.
According to research, eating a good breakfast before working out could ''prime'' the body and help it burn carbohydrates as you exercise.
Scientists at the Universities of Bath, Birmingham, Newcastle and Stirling compared the effects of having breakfast versus fasting overnight before an hour of cardiovascular workout.
Researchers tested blood glucose levels and muscle glycogen levels and they found that eating increased the rate the body burns energy during exercise, as well as increasing the rate it metabolised food eaten after.
PhD student Rob Edinburgh told Sky News the carbohydrates burned while exercising were ''not just coming from the breakfast that was just eaten, but also from carbohydrate stored in our muscles as glycogen''.
He added: ''This increase in the use of muscle glycogen may explain why there was more rapid clearance of blood sugar after 'lunch' when breakfast had been consumed before exercise.''