Do you fast your aquarium fish?

Some pond or aquarium fish owners somehow think it is good for fish if they skip feeding a day or two each week for "fasting". I do not do that at all. I feed my fish once every day, seven days a week. There is no skipping on feeding fish from me unless I get an ammonia or nitrite spike from a mini-cycle in the tank.

It is true that fish can go without food for weeks without dying, but I really see no benefit in skipping a day or two even when there is no real harm either.

What is your opinion on fasting a fish? Do you do it? If so, how often?