Try Bikram yoga. For first-timers I think they offer a week of unlimited access for twenty dollars US—a fairly low-cost test. It’s quite physically taxing—in the 90 minutes of the session, for perhaps only ten interspersed minutes, if that, does the sympathetic nervous system even have a chance to give way to the parasympathetic. I assume that those times would be the most risky for you, and of course cannot speak to your experience, but I find it difficult to imagine your imagined stress will be sufficient enough to convince your sympathetic nervous system to activate during those times; it will be quite exhausted already.
Try Bikram yoga. For first-timers I think they offer a week of unlimited access for twenty dollars US—a fairly low-cost test. It’s quite physically taxing—in the 90 minutes of the session, for perhaps only ten interspersed minutes, if that, does the sympathetic nervous system even have a chance to give way to the parasympathetic. I assume that those times would be the most risky for you, and of course cannot speak to your experience, but I find it difficult to imagine your imagined stress will be sufficient enough to convince your sympathetic nervous system to activate during those times; it will be quite exhausted already.
I found a place that offers 90-minutes classes for $30, which sounds worth a try.