A new global study reveals a striking contradiction, in that people in developed nations burn an excess of calories daily more than those living conventional lifestyles, yet they are significantly heavier. Even with regular exercise and increased calorie burning, obesity rates continue to climb. Weight loss isn't just about shedding fat, it also involves losing muscle and water, prompting the body to slow its metabolism in response. Moreover, the type of food you eat affects how your body stores fat and energy.