[dmitriz]

But many people prefer routine and automation. Routine helps avoid wasting time and mental efforts by staying alerted to how exactly you feel at all times, not to mention the ease to misread your feeling.

I can only speak for myself, and find it really challenging to reliably evaluate my hungriness/thirstiness. If I can get hungry just by looking at food, or if I end up eating way too much because I've thought I was hungry (I wasn't!), then how on Earth can I possibly rely on such elusive indicators?