**Core Concept**
Testosterone is a potent androgenic hormone that plays a crucial role in the development and maintenance of male reproductive tissues, such as the prostate, seminal vesicles, and epididymis. Continuous administration of testosterone can lead to significant changes in the body, particularly in the male reproductive system.

**Why the Correct Answer is Right**
Continuous testosterone administration can lead to **testicular atrophy** due to negative feedback inhibition of the hypothalamic-pituitary-gonadal axis. The elevated levels of testosterone suppress the release of gonadotropin-releasing hormone (GnRH), which in turn reduces the secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the pituitary gland. This decrease in LH and FSH levels results in reduced stimulation of the testes, leading to atrophy of the seminiferous tubules and subsequent testicular atrophy.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not mentioned in the context of continuous testosterone administration.
* **Option B:** While testosterone can increase muscle mass, it is not the primary effect of continuous testosterone administration.
* **Option C:** This option is not a direct consequence of continuous testosterone administration.

**Clinical Pearl / High-Yield Fact**
It's essential to note that continuous testosterone administration can also lead to other complications, such as **acne**, **hirsutism**, and **prostatic hyperplasia**.

**Correct Answer:** C.