So today I picked up piano as an instrument and have started literally from square one. Anyways, I was going through a beginners exercise book and was making what I'd consider good progress, but when I got up from the bench to take a break I instantly found myself with a huge pain in my neck. I don't know how I got it but it's already been an hour since I got up and it's still there. I also remember when I first tried to pick up piano when I was 3 I had the same problem (and it was actually the reason I gave up on it then). I'm sitting with my back straight up, my arms are bent at about a 90 degree angle, and my head is maybe only slightly crooked down... and considering I hit this pose basically any time I'm sitting down and never have a problem I can't figure out what's going on
Any advice or ideas on what I'm doing wrong?