We all know that coffee is a stimulant, but can it help you burn body fat? Scientists from the Department of Physiology of the University of Granada in Spain examined the effect of caffeine on the oxidation of fat in morning and afternoon exercise sessions, and found a strong cup of coffee increased fat burn. However, it may have little impact on weight loss, says Katherine Black, senior lecturer with Otago University's Department of Human Nutrition. She joins the show to discuss.