I guess you mean stake, right? If you are talking about staking, then ETH can't be staked yet. It uses proof of work, where you have to mine the coins. There are exchanges that allows you to "stake" your coins, but that is not staking. You are just lending your coins to those exchange and they share some profit with you. Remember, when you store your coins in an exchange and give it to them, they are no longer yours. Like others said, not your keys, not your coins. You just trust with your coins. If they get hacked, your coins are gone. I am not sure but I have heard that you can stake your coins for ETH 2.0, but once you stake it, you will have your coins locked until ETH 2.0 has been completely rolled out.
If I'm not mistaken, ETH 2.0 is already running as some sort of a testnet (called "the beacon chain" by ETH devs). You can stake ETH 2.0 at various staking pools, but you won't be able to redeem the rewards until the upgrade process is complete (someone correct me if I'm wrong). I wouldn't advise anyone to use a centralized exchange or staking platform to stake ETH, simply because the risk of loss is high. Without access to a private key or seed, your coins can easily disappear due to hacks or theft.
While staking ETH is good, it's definitely not the most rewarding compared to other cryptocurrencies on the market. I've seen other coins with better rates, proving to be 2-3 times more profitable than ETH itself. I always check on the stakingrewards.com website to see which PoS coin is the most profitable one to stake. As long as you play your cards right, you'll be on a path towards non-stop financial success. Just my opinion
