 FACT: Morpheus specifies the human body generates 25,000 BTUs of  body heat. The human body is constantly outputting heat into the  environment so he should specify the rate of energy transfer rather  than a total amount of energy being transferred. Or he should  specify how much time it takes for a human body to output 25,000  BTUs in order for any claims, regarding how much energy is extracted  from humans, to be meaningful.