Body Mass Index (BMI) is a calculation that uses a person's height and weight to estimate their body fat. It is commonly used as a screening tool to identify potential weight-related health issues, but it has significant limitations.

The podcast episodes discuss the history, calculation, and shortcomings of BMI, highlighting how it can misclassify individuals as overweight or obese despite having a healthy body composition. The episodes also explore alternative methods, such as body composition tests, that provide a more comprehensive assessment of overall health and fitness.

For example, this episode of The Fellas podcast delves into the fellas' own BMI calculations and analysis, while this Life Kit episode provides an in-depth look at the history and limitations of BMI. Additionally, this Ologies episode explores the topic of BMI and body composition from an evolutionary anthropology perspective, and this Chasing Life episode critically examines the use of BMI as a diagnostic tool for health.