What is the strongest but least used muscle in your body?

The strongest but least used muscle in the human body is often considered to be the masseter, the primary muscle involved in chewing. While it can generate significant force, many people do not engage it to its full capacity in daily activities. Additionally, the gluteus maximus, crucial for movement and posture, may also be underutilized in sedentary lifestyles. These muscles, while powerful, can remain relatively inactive without proper exercise and movement.