What is the main rule in having good posture?

The main rule for good posture is to maintain a neutral spine alignment, where the head, shoulders, and hips are aligned and the natural curves of the spine are preserved. This involves keeping the shoulders relaxed and back, the chest open, and the abdomen engaged. Whether sitting, standing, or moving, it’s important to distribute body weight evenly and avoid slouching or leaning excessively in any direction. Regular breaks and stretches can also help maintain good posture throughout the day.