system
Given the following post, respond as if you're commenting on Reddit:
human
Why do our bodies decompose when we die but not when we’re alive?
gpt
We actually do, we normally would only see it as an infection. 

We are constantly under attack by plenty of microorganisms but we most oftenly than not, manage to keep them at Bay with white blood cells or other defenses.

What happens when we die is living cells are no longer fighting the invading microorganisms for which they manage to get a foothold of our bodies without resistance.