Lean Body Mass (LBM) refers to the weight of everything in your body except fat. This includes your muscles, bones, organs, and water. Maintaining a healthy LBM is important for overall health, as it plays a key role in metabolism and physical performance. People with higher LBM often have better strength and endurance, making it easier to perform daily activities. To increase your LBM, you can engage in regular exercise, particularly strength training, and consume a balanced diet rich in protein. Foods like chicken, fish, and beans can help support muscle growth. Staying active and eating well can lead to a healthier body composition and improved fitness levels.