No KMA; it's legal, it's not toxic, and it works. Not any different than tumeric from a rational standpoint, though I understand rationality is in short supply on this topic.
The lung-function part is interesting if you dig into it. Has been studied at some length over the decades. Counter-intuitive would be a good word. Edit: there's also massive tranches of anecdotal evidence from high-level athletes on that subject. You might be surprised.
