I think what I’ll do is get a hobby that is not too expensive. Like, you have to buy something overpriced to satisfy a midlife crisis, but at least I will try to get some nice headphones (not harmful at least, and with nice headphones you can play your music quieter, save your hearing) or a good bicycle (healthy!) out of it.
Anything but a sports car, really. Driving around in a sports car is just advanced sitting, which I already do to much of, and they are very expensive.