The "Cobra" strengthens the spine, lower back, and stretches the muscles in the chest. By maintaining a constant exertion with breath control it is possible to…more »The "Cobra" strengthens the spine, lower back, and stretches the muscles in the chest. By maintaining a constant exertion with breath control it is possible to create a greater arch in the spine, whereby the stomach and pelvic muscles are also engaged and strengthened. « less
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