Parsva balasana is the perfect posture for anyone experiencing chronic stress and tension, particularly for those who hold tension in their upper body, neck and shoulder. It is thought that the twist through the spine helps to "wring out" negative energy, releasing both physical and mental tension, and preparing it for fresh nourishment.
This is a good posture for learning how to balance effort and ease because the inhale lengthens the spine, while the exhale relaxes the body and deepens the twist.
Parsva balasana is also a good posture for balancing the muladhara (root) chakra. When balanced, it can help the yogi feel more grounded and connected to the earth. Additionally, this chakra supports living in security, stillness and clarity, and finding relief from the stresses of life.