It stands for non-fungible token. Like the token definition above, it is a digital asset built on a blockchain. The ‘non-fungible’ part simply means that it is unique, and has no interchangeable counterpart. For example, $SWEAT itself is fungible, because 1 $SWEAT can be swapped for another $SWEAT. They are identical. We are working to build $SWEAT NFTs: one of a kind tokens representing movement achievements, avatars, artwork and more, which can then be put on the market.