Lean Macros Lean Macros is a beginner guide to understanding basic nutrition for optimising body composition. If you are looking to lose body fat or gain muscle to improve your physique then the food you eat and indeed the quantity of food is of paramount importance, all the exercise in the world won’t help if you don’t understand and apply the foundational principles of good nutrition. This short guide breaks down these fundamentals in to a step by step process ensuring you become educated on why you need to follow these steps along the way. Sustainability is at the heart of the Lean Plans philosophy; if you cannot see yourself eating a certain way or following a diet in the long term then it is almost certain to fail. Take the time to educate yourself however and you will have the tools needed to stay lean and healthy for life.