How to stake iost?

Hello, I'm curious about how to stake iost tokens. Can you please explain the process in detail? What are the requirements for staking iost, and what kind of returns can I expect? Is there a risk associated with staking iost, and if so, how can I mitigate that risk? Additionally, can you provide some insights on the benefits of staking iost, and how it contributes to the overall health of the iost network? Thank you for your time and assistance.