5
votes
2answers
2k views

Psoas Muscles Hurt Using Exercise Ball for a Chair

Will my psoas muscles stop hurting after using an exercise ball for a chair for a while? I've been using the exercise ball as a chair for about a week now 4 hours a day at work, and it seems that ...
4
votes
1answer
2k views

Can psoas muscle cause lower back pain?

Can tight psoas muscle cause lower (lumbar) back pain? If yes, which exercise would be best to recover? Thanks. How do you differentiate if the pain in lower back is because of tight psoas or due to ...