Look no further than the Chinese herbs of Ginseng and Ginkgo Biloba which protect the blood vessels, while ensuring healthy blood flow around the body and to the extremities such as the genitals. In 1988 researchers found that L-arginine's vast-ranging health and fitness advantages had been due principally to its position as a precursor to nitric oxide. to be done on the contrary it can be a perfect tool to relieve stress