a 20-year-old trainer practices pilates on an elevator chair, raising her arms high above her head. seated.

abdominal above athletic balance blonde body breath breathing chair circulation control correction device elevator exercise fit fitness focus gymnastics hands head health healthy human improve instructor joint lifestyle machine movement muscle muscles old out person pilates posture raised raising seated shoulder show side silhouette sitting smiling spine stabilization stimulates strengthening stretching tense tension trainer twenty view vitality woman workout years young