Rounded upper back
Thoracic spine flexes off the floor; shoulders roll forward.
Overactive muscles
Pec major / minorLatissimus dorsiUpper trapeziusLevator scapulae
Corrective work
Foam RollPectorals↗Foam RollLats↗Foam RollThoracic spine↗StretchDoorway pec stretch↗StretchLevator scapulae stretch↗