How do I invest in an HSA?

I’m just curious on how to invest into an HSA, what an HSA actually is and if I can do this through Fidelity?

Hi Chris,
This explains how an HSA works: https://www.instagram.com/p/CB_ZfBWH3D6/
Make sure you are eligible!
And yes in your Fidelity account you can open up an HSA account! I also have a withholding on my paycheck to account for the tax advantaged HSA contribution.