The blood vessels dilate to increase the "blood traffic" through the lungs to carry more oxygen to the muscle. The lungs work harder (faster respiratory rate) to increase the rate of oxygen/carbon dioxide exchange in the lungs.
The gland that regulates metabolism is the Thyroid Gland.
Id say that chocolate milk may have the most potassium of them all. Water does not have any nutritional content (though it is still important). Juice overall will vary, milk does have a high amount of potassium but the added chocolate syrup does add some more.
