What is good posture by definition?

This is more specific than that of a bad posture because it is based on one’s needs and how much you have succeeded is not possible to measure.

A good posture is not something fixed. It changes often. The key is to keep moving and staying active. If you are unsure, then keep trying various other postures, just like how your diet needs to be varied yet balanced.

While one has to be consistent in physical activity, people are more often consistent in not doing them. Even active people tend to become less active. It is better to have a variety of movements and not stick to a particular position.

You don’t have to take excessive efforts. At the same time, you should keep yourself from trying. To strike a balance between these, adopting a variety of postures will help. Exit your comfort zone but don’t go too far away.