Exercise and your arteries.
D001158:Arteries / Q000033:anatomy & histology / Q000502:physiology*; D004730:Endothelium, Vascular / Q000378:metabolism; D015444:Exercise / Q000502:physiology*; D006801:Humans; D008297:Male; D009569:Nitric Oxide / Q000096:biosynthesis; D010410:Penile Erection / Q000502:physiology
D009569:Nitric Oxide