This prototype animation exist's to help explain the negative effects of Energy Deficit, and why we need to become more aware of the science of our hormones. The animation ‘Energy Deficit- Why is it so Hard to Lose Weight?’ was the result of a collaboration involving myself and Dr Jose Areta, ambassador of the Endocrinology Society and Sports and Nutrition lecturer at Liverpool John Moore’s University. Dr Areta's research explores the bodies physiological response to lack of energy, through dietary intake and exercise. With very little discussion or awareness being bought to the public regarding energy deficit, many people suffer to lose and gain weight at some point in their lives.