In album: When the stomach is empty

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When the stomach is empty, it secretes certain hormones, prompting local nerves to relay signal to the brain. The brain responds by sending another signal to the stomach and the intestine. This causes repeated contraction of muscles, lining the digestive system. http://www.maxmusclestack.com/endozyn

500full-helena-mattsson

500full-helena-mattsson When the stomach is empty

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