pretty much all of the above but the big one is def being lean, although I have been leaner than i am today yet i am more vascular.. i am not sure why that is, maybe cause i have more muscle?
Back in the day when I was 10% (and a 100lbs lighter) I'd have bicep veins. Now, a lot heavier, I see veins on my shins and brachial muscles (upper forearm).