Is it possible to relieve muscle tension, whether it's due to poor posture or poor blood circulation?

Lately, I've been sitting for long periods of time, so my posture has become hunched over. As a result, my neck and shoulder muscles have become stiff and uncomfortable. My calves also feel stiff and stiff. My biggest concern is poor blood circulation, which causes facial swelling that doesn't go away easily every morning.

I've been trying stretching and simple exercises, but the results don't seem to last long. I'm wondering if there's a better way. If you have any tips for improving blood circulation through lifestyle changes or home care routines, I'd love to hear them. I'm sure many people have similar concerns, and even small changes in habits can help. Is there a way?