you have to feel? also, def. do the same thing as anyone would. tie off, pump those fists, lean on that one arm, foot, whatever the place may be. feel for it, press, push, do ONE PUSH UP IF YOU CAN and those veins may start popping; these are things I sometimes have to do even w/o any fat on the body because my veins are long gone by this point. also, you dont always have to see the vein; dont think like that. I shoot into the same spot I always have, for many years. its not always ON but for the most part ill see that blood drawn back and ill be insta HARD - meaning excited, lol. BOOM - HIGH AS A KITE, I JUST MIGHT, STOP TO CHECK YOU OUT! ha. sorry for quoting there but was feeling it as I type this because I just had to find a vein about 10 minutes ago before getting LIT UP LIKE A MOFO on some great FENT!