Final answer:
Body Mass Index (BMI) is a measure used to determine if a person's weight is within a healthy range based on their height. It does not directly influence attractiveness, as opinions on attractiveness can vary depending on time period and culture.
Step-by-step explanation:
Body Mass Index (BMI) is a measure used to determine if a person's weight is within a healthy range based on their height. It is calculated by dividing a person's weight (in kilograms) by the square of their height (in meters). A BMI of 18.5-24.9 is considered to be normal weight, while a BMI below 18.5 is considered underweight and a BMI over 25 is considered overweight or obese.
As for the influence of BMI on attractiveness, opinions can vary based on time period and culture. In some cultures and historical periods, a higher BMI may be seen as more attractive, while in others, a lower BMI may be preferred. However, it's important to note that attractiveness is subjective and can vary greatly between individuals.