Many dieters believe a calorie is a calorie and operating at a calorie deficit is the key to weight loss. However, counting calories is an ineffective and often unhealthy diet method. The body processes calories from different sources in different ways, and assuming all calories are equal often leads to overconsumption of refined carbohydrates. Tyler Hass explains why eating high-quality foods and exercising with high intensity is the most effective way to drive favorable changes in body composition.