Image Description: Cobra stretch has been illustrated in order to reveal the superficial muscles and what muscles are involved with this particular stretch. The exercise stretches the rectus abdominus, illiacus, psoas major, pectineus, tensor fascia latae, rectus femoris. Image File Sizes: Size Pixels Inches (@300dpi) cm (@300dpi) Small 600 x 518px 2.0 x 1.7” 5.1 x 4.4cm Medium 1200 x 1036px 4.0 x 3.5” 10.2 x 8.8cm Large 2400 x 2072px 8.0 x 6.9” 20.3 x 17.5cm X-Large 4000 x 3453px 13.3 x 11.5” 33.9 x 29.2cm Maximum 4539 x 3918px 15.1 x 13.1” 38.4 x 33.2cm Anatomy Visible in the Medical Illustration Includes: Image created by: Joanna Culley