The secretion of testosterone is maximum at adolescence and early adulthood in a male human being. Give reason.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Testosterone**: Testosterone is a steroid hormone primarily produced in the testes in males. It plays a crucial role in the development of male physical characteristics and reproductive functions.

2. **Adolescence and Early Adulthood**: The period of adolescence typically ranges from ages 10 to 19, while early adulthood is generally considered to be from ages 20 to 40. During these stages, the body undergoes significant changes.

3. **Puberty and Hormonal Changes**: At the onset of puberty, the hypothalamus in the brain signals the pituitary gland to release hormones that stimulate the testes to produce testosterone. This surge in testosterone levels is responsible for the development of secondary sexual characteristics in males, such as increased muscle mass, deepening of the voice, and growth of facial and body hair.

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