Yoga is a general stand-in for light isometric exercise. If you have a pinched nerve, adapted exercises including specific yoga poses and low-impact exercise are still recommended to help recover. For moderate exercise to get the endorphin-powered stress relief, swimming and upright/recumbent stationary cycle with good posture can be appropriate for someone with a pinched nerve.

I hate it too, but tailored exercise is kind of a magic bullet.

In that case, you might need actual physician's care and not just friendly advice.