Exactly. What takes more energy to heat in the winter,  a 1200 square foot ranch house, or a 10 bedroom mansion? The same principle applies to fat fucks. That's one of the things that pisses me off the most about the tubs who somehow gain weight on my 600 pound life: they're so fucking large that they probably burn 3-4000 calories a day just laying in bed. It takes that much energy to keep up their body temperature.