Adulthood is a stage in human development that begins after adolescence and continues through the rest of a person's life. It is typically characterized by several key features:

1. Physical Maturity: Most individuals reach physical maturity during early adulthood, with peak physical health and strength often occurring in their 20s and 30s.

2. Emotional and Psychological Development: Adulthood often involves continued emotional and psychological growth. Adults may develop a clearer sense of identity, purpose, and personal goals. They might also experience increased emotional stability compared to adolescence.

3. Career and Financial Independence: Many adults focus on career development and achieving financial independence. This can involve pursuing education, building a career, and managing personal finances.

4. Relationships and Family: Adulthood often includes forming and maintaining relationships, which might involve marriage, parenting, and building a family. Social roles and responsibilities change, and individuals may also become caregivers for aging parents.

5. Health and Well-being: As people age, they may face different health challenges and need to focus on maintaining physical and mental well-being through lifestyle choices, regular exercise, and healthcare.

6. Personal Growth and Life Satisfaction: Adults often seek personal growth and satisfaction through various activities, including hobbies, community involvement, and personal achievements.

7. Legal and Social Responsibilities: Adults have legal responsibilities and rights, such as voting, working, and being held accountable for their actions.

Adulthood is a diverse and dynamic period of life, marked by ongoing changes and challenges as individuals navigate their personal and professional lives.