How does any air fryer work?

Air fryers are pretty neat. If you blast the heat, you can create crisp, crunchy food in no time flat. Or you can reheat leftovers evenly on a lower setting. Or, if you're really wise, you roast vegetables to perfection.

But, let's say you're new to air fryers, or you're just curious: How do air fryers actually work?

Well,...