Safe Luxury

What are some "Fail-Safes" that one's body goes through to protect itself?

In regards to injury, intense damage mentally, and sleep deprivation. Isn't shock some kind of "guard"? Adrenaline is too, right? Please make your answers as long as possible without "filler". I can't sleep and reading helps this :)

Public Comments

1. Yes, you'll go into shock to guard against feeling the immense pain and to slow down your body functions so that you can heal more thoroughly, or at least not die as quickly. Adrenaline helps you to get away from a harmful situation or to have the extra strength to momentarily deal with it. You have your blood's ability to clot to deal with wounds.
2. NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO is that long enough?