a 50-year-old trainer practices pilates on an elevator chair, sitting up straight with her arms raised and folde

abdominal arms athletic back balance blonde body breath breathing chair circulation control correction device elevator exercise fifty fingers fit fitness focus folded front gymnastics hands health healthy her human improve in instructor joint lifestyle machine movement muscle muscles of out person pilates posture senior show side silhouette sitting smiling spine stabilization stimulates straight strengthening stretched tension trainer view vitality woman workout