Award Best Answer. Once your question has been posted for at least 1 hour and has at least one answer, click on 'Award Best Answer' button next to your chosen answer. 1  Upload failed. 2  Please upload a file larger than 100x100 pixels. 3  We are experiencing some problems, please try again.
Alcohol dilates peripheral blood vessels, but has been known to actually. constrict some blood vessels in the brain, lowering the oxygen content. Alcohol dilates peripheral blood vessels, but has been known to actually  constrict some blood vessels in the brain, lowering the oxygen content.
Taking time out for air: Entering your heart, alcohol reduces the force with which your heart muscle contracts. You pump out slightly less blood, blood vessels all over your body relax, and your blood pressure goes down temporarily.