It’s ok to stand up after your plane lands
Of course, after the flight staff says it’s ok to do so. I’ve seen so many posts hating on people who stand up right after a flight. But after suffering from chronic back pain stemming from a herniated disc, I understand how badly some people need to stand and move even after just sitting for 10-15 minutes. On bad days, flare ups can really cause bad sciatica and numbness and moving around and standing can help reduce the pain if sitting has put a lot of stress on the back. People who have never had back/disc issues will never understand. So as long as it’s not hurting anyone else, I think it’s perfectly fine that anyone who wants to, can get up right away on a plane!