The 12 hours is a guess. IPeter Attia has talked about this. We just don’t know when autophagy kicks in in humans as we have no direct measurements or bio marke

The 12 hours is a guess. IPeter Attia has talked about this. We just don’t know when autophagy kicks in in humans as we have no direct measurements or bio markers to measure yet. I forget how they measure it in animals but I believe it results in animals no longer being among the living.