The cells would become energy starved leading to ischemia and then infarction. This is if one was unable to do anything else to maintain the homeostasis.
You body however is able to utilize several mechabisms, primarily the use of fats and in extreme cases muscle tissue for the use of energy and ATP production through anaerobic metabolisis.
Consume, swallow, drink, sip, gulp, etc
People who are obese are screened for diabetes or thyroid condition
. Woman are screened for breast cancer. I think I'm not sure
Talking to friends/family
having alone time to yourself, meaning doing something you like or relaxing
sleep
i hope this helped if this is what you were asking for