I've fasted many times, for physical health and "spiritual" reasons, once for as long as 40 days.

One of the benefits is that I don't have any fear of hunger if I were not to have enough resources to buy food.

I have not found the courage to fast for quite a long time though.

As to discussing fasting with someone who has no food, idk. I guess it would depend on each case & the feeling I get.

Sat Nam