Which team has the biggest losers? We'll be calculating weight lost as a percentage of total weight per team, as well as the largest reduction in BMI.

BMI (Body Mass Index) Body Mass Index (BMI) is a number calculated from a person's weight and height. BMI is a reliable indicator of body fatness for people. BMI does not measure body fat directly, but research has shown that BMI correlates to direct measures of body fat, such as underwater weighing and dual energy x-ray absorptiometry (DXA). BMI can be considered an alternative for direct measures of body fat. Additionally, BMI is an inexpensive and easy-to-perform method of screening for weight categories that may lead to health problems.

More information about BMI, including how it's calculated, can be found at the Centers for Disease Control.