Having weak and/or tight muscles can make it difficult to maintain good posture, even if you know what proper posture is for your body.
Yoga teacher, Lillah Schwartz, gets the question all the time from her students - "What are some simple yoga poses I can do to improve my posture?"
Enhance the Heart Center
This video demonstrates a good range of restorative yoga poses in just a few minutes.
Practicing this meditation helps to open the heart center and promote feelings of the positive self. It's very simple and helps to quiet the mind quickly. Try practicing daily, in the morning, during a break at work, or whenever you need a stress break.