Investing in an HSA Provider

Hannah and her husband have 18 thousand dollars in a helse savings account. About half is in cash, the other half invested in a us Total stock market fund. They can't contribute to their h s a for at least the next year. And they also don't expect to need the money unless i get mauled by a bearer or something equally catastrophic. Shouldn't we invest the money like it's a retirement account? Ah, should we keep a bunch of money in cash. A, we don't really do bonds anywhere else,. But the bond funds seemd pretty good so we could allicate money to lower volatility options. Haha, ha ha. At is a