Mesomorphs might seem to have it easy, with their naturally athletic build, but they, too, require an intentional approach to nutrition and fitness in order to maintain or build upon this physique. By following a mesomorph diet and a tailored workout plan, mesomorphs can work with their body type tendencies to achieve their fitness goals, whether that means maintaining their athletic physique, building more muscle mass, or lowering their body fat percentage for an even leaner look.