Which of the following is NOT a major muscle group of the body?

The calves, while they play an important role in lower body movement and stability, are not typically classified as one of the major muscle groups compared to the other options provided. Major muscle groups in the body typically include the chest (pectorals), back (latissimus dorsi and trapezius), core (rectus abdominis and obliques), and legs (quadriceps and hamstrings), among others.

The biceps are recognized as a significant muscle group primarily involved in flexing the elbow and are part of the upper arm muscles. The obliques, which are located on either side of the abdomen, are crucial for trunk rotation and side bending. The trapezius, situated in the upper back and neck, plays a vital role in moving, rotating, and stabilizing the shoulder blades.

In contrast, although the calves (comprised of the gastrocnemius and soleus muscles) are essential for walking, running, and jumping, they do not carry the same degree of importance as a primary muscle group in overall strength training or functional movement. This distinction helps to highlight the classification of major muscle groups in the context of physical education and fitness.