Massage is beneficial mainly because it:

Massage is primarily beneficial because it supports homeostasis, which refers to the body's ability to maintain a stable internal environment despite external changes. This process is crucial for overall health and well-being, as it helps regulate various physiological systems, such as circulation, stress response, and immune function.

During a massage, the manipulation of soft tissues can enhance blood circulation, improve lymphatic drainage, and reduce muscle tension, all of which contribute to a balanced internal state. Additionally, the relaxation achieved through massage can lower stress hormones and stimulate the release of endorphins, promoting emotional well-being and physical health.

The other options do not capture the core benefit of massage as comprehensively. While muscle hypertrophy may occur through specific types of exercise and training, it is not a primary focus of massage therapy. Similarly, while weight loss may be positively affected by massage in terms of promoting relaxation and potentially encouraging more physical activity, it is not the main purpose of the practice. Lastly, reducing bone density is contrary to the goals of massage therapy, as healthy bone density is essential for overall musculoskeletal health. Thus, supporting homeostasis is the most accurate depiction of the main benefit of massage.