Sadly it's an unhealthy profession. Spending 8 hours a day sitting on a chair with your neck fixed in the same position watching a screen harms your body a lot,

Sadly it's an unhealthy profession. Spending 8 hours a day sitting on a chair with your neck fixed in the same position watching a screen harms your body a lot, even if you try to keep a good posture and do stretches from time to time. If you add stress to it, which tenses your muscles unconsciously, it just gets worse. I don't have any good advice other than try to reduce that time as much as possible. Your body will feel better and hopefully your mind too.