Muscles spinaux exercices

Muscles spinaux exercices Source google image: https://www.wikihow.com/images_en/thumb/4/43/Use-an-Exercise-Ball-to-Help-with-Lower-Back-Pain-Step-1-Version-2.jpg/v4-728px-Use-an-Exercise-Ball-to-Help-with-Lower-Back-Pain-Step-1-Version-2.jpg