Ideal Body Weight (IBW) refers to a weight range that is considered healthy for a person based on their height and body composition. It is often calculated using formulas such as the Hamwi formula or the Devine formula, which provide a guideline for maintaining overall health and reducing the risk of chronic diseases. Factors influencing IBW include age, gender, and muscle mass. While IBW can serve as a useful benchmark, it is important to remember that individual health is also affected by lifestyle choices, such as diet and exercise, making it essential to focus on overall well-being rather than just weight alone.