there is this vein that i have sticking out that none of the buff guys at the gym or in pictures seem to have, and i have a fair bit of body fat, but when i tense my muscles, some veins pop out, including this one that runs along the side of my arm (beteen tri and bi) and then over the sticky out bit of my elbow. it's weird coz it's only on my right arm, and nobody else has it, that i know of, does anyone have an explanation?