I'm 26 years old, I live an active life, have a muscular body, work out regularly 3 - 4 times a week, and eat healthy. But, for some reason I have these tiny veins (always red) that pop up now and again on my legs, and they are painful. Sometimes they radiate from a darker center, like a bruise. Sometimes they're just randomly at the surface of my skin. Is there any reason why I could be having these veins at my age? I started noticing them last year in the fall.