>>28610549
>No, just being in an uncomfortable position for hours and hours.
You sure it wasn't just from vibrations and holding weight with your hands/arms? Ideally you should hold your bars light as can be, but most people I see are riding all their weight on them, even sport bike riders. It takes a lot of conscious effort to get that habit of holding weight with legs, you almost want to be pushing up with your legs and pulling them in at the same time. Keeps your back nice and straight too.

Its a thing people are told, but like I said, most don't, and you do have to actively thing about it, just like how you have to think about your bad posture in your chair right now.