Small edit: I should have made clearer what I meant by metabolic rate. Metabolic rate in terms of heat produced per day increases as a function of mass, so huma

Small edit: I should have made clearer what I meant by metabolic rate. Metabolic rate in terms of heat produced per day increases as a function of mass, so humans have a higher metabolic rate by a good bit than mice. See Kleiber's law: https://en.wikipedia.org/wiki/Kleiber's_law https://en.wikipedia.org/wiki/Kleiber's_law However, this relationship scales sub linearly (exponent is ~3/4), so a human is actually more efficient (in terms of converting food to energy for living whose waste then gets radiated as heat). Essentially the concept stands, a mouse's metabolism works differently (apparently generating more heat) than a human's, and we should be careful about how we compare the two.