Body mass index or BMI measures body fat percentages based on height and weight. This measure is not always 100% accurate, because muscle weighs more than fat. People who are very muscular such as body builders may have high body mass index even though they have a low body fat percentage. I recently read a study that stated people with high body mass indexes prefer colder temperatures. In this study the term colder temperatures referred to both outdoor and indoor climate. The study stated that people who have high BMIs would prefer to live in a cold environment that requires heat in the winters. The study also concluded that people with high BMIs set their thermostats to very low numbers in the summer. On average thermostats were set to below 70 degrees in this study. The research article explained that when people have more fat on their body, they typically run warm due to the insulation that fat provides for their body. This makes sense scientifically, but I personally believe what temperature you set your thermostat to is personal preference rather than body composition. I am someone with a low BMI, and I personally set my thermostat to a low temperature in the summer because I get overheated easily. I also think that the temperature people set their thermostat has to do with how important saving money is to them. People who are trying to save money on their electric bill typically will not set their thermostat to a super low temperature in the summer or to a super high temperature in the winter.