To stretch that to living systems where each constituent unit will have unpredictable behavior to a large extent, is silly.
No, to think that something is EXEMPT from a LAW is what's silly.
If it didn't apply universally, it wouldn't be a law.
Perhaps you could then explain the deterioration of the human body with age. Perhaps you could explain where mutations come from. Perhaps you could explain exactly what the difference it between a dead body and a live one is. What is life? And why does the body begin to rot so quickly once the individual dies? Or more precisely, what is it that keeps the human body from resisting for so long the deterioration that the 2nd Law imposes on it ?
Tell me more about how the human body, for the law to be applicable, can be considered an isolated system. Give me the modes of isolation, and the range of the properties that ensure this isolation.