“SIT UP STRAIGHT”
If you take a moment to think about your posture, you may sit slightly off balance.
The habitual posture is comfortable, but that may not be the correct posture for you.
So, Sit up straight 🙂
If you find yourself sore in a particular area of your body while you are sitting straight, have a little walk and give yourself a short break.
Small changes can make a huge impact.