4. Could Decrease Heart Rate
Some studies have also shown that cold water may have a role to play in decreasing your heart rate. Drinking ice water supposedly stimulates the tenth cranial nerve - the vagus nerve. This nerve is a significant part of the body’s autonomous nervous system, and it mediates the lowering of heart rate. When you consume chilled water, the low temperatures of the water stimulates the nerve to cause the heart rate to drop.
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