Short Box: Side to Side
Intermediate (6/10)Reformer
Position: SeatedEnergy: 5/10~45s
Cueing
Reach arms up; lean to one side while keeping both sit bones grounded; alternate sides.
Anatomy & Muscles
PrimarySecondary
Primary Muscles
Rectus Abdominis
Secondary Muscles
External ObliquesTransverse AbdominisErector Spinae
Regressions
Smaller lean range; hands on shoulders; keep arms down.
Progressions
Hold the side lean; add small pulses; reach further.
Common Errors
Lifting the opposite hip; collapsing the waist; neck strain.
Contraindications
- Lumbar Disc Hernia
- Osteoporosis (Flexion Risk)
- Shoulder Sensitivity
- Wrist Sensitivity
