Reflecting cold
These are not trivial amounts: the average human body receives about
400W of radiant heat from indoor surroundings, and radiates about 330W
in turn. To stay in heat balance, the difference of 70W is made up by
burning food by the body.
If the body receives 400 and emits 330 the temperature of the body would
rise until the themal losses = the gains at which time we would be in
thermal equilibrium :-) Zeroth law IIRC
"the difference of 70W is made up by burning food by the body"
Read it again
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