Meal replacements have become hugely popular in the past few years. Meal replacement shakes are a fast, convenient way to get a nutritionally perfect meal. For bodybuilders. Essentially a nutritionally perfect meal in a packet, typical meal replacements give an impressive macronutrient profile of around 40g protein, 25g carbohydrates and minimal fat, plus a perfect ratio of vitamins and minerals for optimum health and physical performance. Leading MRPs are Myoplex from EAS, Nytro Pro 40 from AST and the original MRP - Met-Rx.