Losing weight may seem anything but simple. With all of the trendy diet plans and new workout fads-it is easy to become confused. The good news is that the basics of weight loss have not changed over the years. It all boils down to Calories In versus Calories Out. Too many Calories In, and you will gain weight. Extra Calories Out and you will lose it. Keep in mind that 3,500 calories equals one pound and every single calorie counts!