To build muscle mass effectively, focusing on compound movements is key. Exercises like squats, deadlifts, bench presses, rows, and overhead presses engage multiple muscle groups at once, which helps recruit more muscle fibers and promotes growth and strength. Incorporating isolation exercises, such as bicep curls, tricep extensions, and calf raises, can further enhance your routine by targeting specific muscle groups and ensuring balanced development. This combination of compound and isolation exercises can lead to well-rounded strength and muscle gains over time.