Fat in Coffee to Continue Fasting

I am asking with respect and curiosity… but if the thought work involved in making permanent eating changes is done thoroughly, why would one need fat in his or her coffee to get them to the next eating period? My understanding is that most of us have enough fat storage on our bodies to get us to the next eating period without need for additional fat or calories.

I guess I am wondering if someone is feeling a desire or “need” for food before the next eating period, or to start the day, wouldn’t it follow the teachings that perhaps some thought work is all that is needed?