What happens to staked Coins?

So, I'm curious to know, what exactly happens to those coins that are staked? Do they just sit there, doing nothing, until the staking period is over? Or are they somehow utilized in a way that benefits the network or the stakers? And if they are utilized, how does that process work? Additionally, what are the potential risks or drawbacks of staking coins? I'd love to hear more about the mechanics behind this process and how it impacts the overall cryptocurrency ecosystem.