Automatically? The cells live.
Almost everything else requires feedback controls of one type or another:
for instance ; temperature, pH, respiration, blood flow, balance.
Even things like walking or driving a car become "automatic" once you learn how.
Autonomic
Water evaporates from the skin which cools the body.
Your body gets fat and some people die
it shrinks in size
you die
No special action is required to care for the sciatic nerve, the body does this automatically. Thus your question is meaningless.
Listening
Listening
You automatically become Aitor
you automatically blink because of you reflexes that your body has.
yes
breathing
A reflex action is a movement your body does automatically. The body moves almost immediately in response to specific stimulation.
There are some things that your body does automatically. Breathing, blood flow, nerves transmitting pain and feelings to the brain, and general internal and external movement of joints are things the body does automatically when there is no medical issues present.
The fight or flight response is an automatic thing that happens to the human body when it is faced with danger at intense levels. You will automatically run away or fight the danger.
sweat
You can't, it happens automatically