No, Battue. That's not what I said. I said one's fat stores help with added calores as to how many calores one burns in a day. I've also stated, several times, that consumption or use of fat for energy depends on sufficent oxygen and the presence of glucose, blood sugar, in one's body. The body burns fat all of the time, not just when one is in "survival mode."
"Survival mode" that you describe sounds alot like starvation posture. That occurs when the body runs out of glucose and has to consume one's muscle tissue after converting it to glucose.
Odviously that needs to be avoided. E