As proof of stake blockchains become more common, the allure of staking and earning rewards is rising as well. That might sound a bit confusing, but essentially all it means is that there are cryptocurrencies out there today that allow holders to lock up, or stake, their cryptocurrencies and earn some interest on those holdings. 

These blockchains incentivize users to stake their crypto by paying rewards, because proof of stake blockchains increase their security and decentralization when more people stake their funds. In reality the roles of staking and transaction verification on a blockchain are a bit more technical than described, but that's a conversation for another day. What's most important is recognizing that there is an opportunity to put your crypto to work and generate some passive income.

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Source Fool.com