If you think that bitcoin might crash in the near futur and/or you don't want to gamble, I recommand exchanging for Dai.
Dai is an Ethereum-based stablecoin issued by makerDAO and whose value is stable relative to the US Dollar. The value of Dai is stablized through a system of Vaults (where multiple forms of supported collateral are held in smart contracts), autonomous feedback mechanisms, and appropriately incentivized exterbal actors.
That is it just wanted to let everyone know that you don't necesseraly need to go to a btc atm right away if you're scared. It is also troublesome to keep lots of cash irl.