Ribcage : Stomach Vacuum Exercises Demonstrated By Fitness Teacher And Her Student, Showing Off Their Shapely Ribcages (W/ Audio)
Stomach vacuum exercises demonstrated by fitness teacher and her student, showing off their shapely ribcages (w/ audio)
original: https://reddit.com/r/Ribcage/comments/do7beo/stomach_vacuum_exercises_demonstrated_by_fitness/
