Weight loss is not solely governed by thermodynamics – a balance between calorie expenditure and calorie consumption. Hormones, and the responses that occur in their function upon eating different foods, as well as how satiating certain foods are, also matters in regard to weight loss. In other words, it’s not just about eating less calories than you burn. There are many factors that affect your body’s energy requirements, such as the amount of muscle mass you have, your age, levels of physical activity, sleep, hormones and general metabolic profile.
