How to improve thoracic spine mobility from rounded posture due to BJJ The Jiu-Jitsu Therapist

Rounded shoulders posture is common in BJJ. This will also lead to discomfort, tightness in the shoulders, and stiffness in the mid back (thoracic spine).
Integrating a foam roller into your warm up and cool down will help improve thoracic spine mobility, reduce pain, and assist with warming up the tissue. This helps me stay mobile and avoid pain and injury.