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.