Kiwi

The fuzzy green underdog.

More vitamin C than an orange, more potassium than a banana, and actinidin — a protein-digesting enzyme.

Kiwi is the fruit that quietly out-performs everything more famous than it. More vitamin C than oranges. More potassium than bananas. Two kiwis a day has been clinically shown to improve sleep quality. All this in a fuzzy little package that costs less than a decent coffee. Eat with a spoon straight out of the skin. Peel? Optional (it's edible, actually). Life hack: kiwi tenderises meat.