Drinking without blushing indicates that there is sufficient secretion of ethanol dehydrogenase in the body, which is able to metabolize the components in alcohol. There are many people who will have a red face when they drink alcohol, mainly because the secretion of ethanol dehydrogenase in the body is insufficient to metabolize the alcohol into carbon dioxide and water, and the alcohol will enter the bloodstream, which will cause the blood vessels to swell. The capillaries in the face are very rich, and when they swell, the face will appear redder because of the swelling of the blood vessels. Some people have a better body constitution and sufficient secretion of ethanol deoxygenase in their bodies, so they can break down the components of alcohol into carbon dioxide and water faster when they drink, and metabolize them out with their bodies. It will not be because of the alcohol into the bloodstream leading to the expansion of blood vessels, and will not appear red, drinking does not blush people will be more alcohol, but still pay attention to not too much drinking, otherwise it will hurt the liver and stomach.