I'd thought about taking aikido in the past but it never happened - but I did just look and my community college does have several tai chi classes available. (oddly in a church basement for the in-person ones instead of the fancy gym they just spent a lot of money building...)

I'm a little intrigued by the ones describing themselves as 'qigong and tai chi' - I know qigong as the 'spiritual energy' that cultivators/martial artists use in Chinese media. Will I be able to leap from rooftop to rooftop and along the tops of trees if I master the class? Conversely, will the class be woo enough to send me screaming, because I just want to learn a gentle exercise that I can continue with even once the arthritis really kicks in?

I'm reluctant to go to an in-person gym class right now anyways; heck, I should probably be testing for covid with the PT given how many people are exercising in there, even with required masking.