When you are looking to go beyond simple cardiovascular exercise to help build muscle mass, strength, and endurance, you will need to look beyond standard machines. While ellipticals and treadmills are an important part of a good cardiovascular workout and weight benches can help you work on arm and chest muscles, the key to building muscle mass is a total body strength workout. In order to truly build strength, mass, and endurance in your muscles, you simply need to own a home gym.