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Cardio Clear 7

The backbender is a whale-shaped yoga prop that stretches the shoulders and the spine, opens the heart/chest area and counteracts the rounding of the upper back. Lying back over a backbender or other prop such as a chair, yoga block or bolster for several minutes, has a powerful physiological effect on the nervous system, glands and organs.
http://ultimatediethack.com/cardio-clear-7-review/