If you find yourself yo-yo-ing between diets and fitness fads or can’t for the life of you stick to your goals long-term… I don’t blame you. Fads and ‘hacks’ come and go and they can only take you so far. That’s why I prefer to base my fitness philosophy on fundamental principles that stand the test of time. Here are 7 must-know nutritional principles when it comes to fat loss. 1. Calorie Deficit Calories in; calories out. The key here is maintaining a healthy calorie deficit