How to fix a tight psoas muscle in 30 seconds?

I'm curious, could you elaborate on the methods for alleviating a tight psoas muscle in just 30 seconds? Are there specific stretches or exercises that can be done quickly and effectively to target this area? Additionally, what are the potential causes of a tight psoas muscle, and how can one prevent it from occurring in the future? I'm interested in understanding the science behind these techniques and how they work to alleviate discomfort and improve overall mobility.