The purpose of the fat layer in the body, also known as adipose tissue, is multifaceted. It serves as an energy reserve, providing insulation to help regulate body temperature, and acts as a cushion to protect vital organs from injury. Additionally, the fat layer plays a key role in hormone production, influencing various metabolic processes. It is essential for the absorption of fat-soluble vitamins (A, D, E, and K) and contributes to overall health by maintaining energy balance. However, too much body fat can lead to health issues, highlighting the importance of maintaining a healthy lifestyle.