• Use as much resistance
  that you can maintain full
  control with.
• Hold chest up and out.
• Maintain natural curve in
  lower back.
• Keep shoulder blades
  retracted together.
• Activate your T.V.A.
• Exhale as you cross
  resistance up and across
  your body.
• Tighten chest muscle at the
  peak of the movement.
  
• Inhale as you return.
• Do not lower arms beyond
  90 degrees.
  
  

All photos by Eric Jacobson