Why are (some) guys arms so vainy?!

Question: Why are (some) guys arms so vainy.?

Ive never seen a girl with vainy arms. and im in volleyball...none of the athletic girls i hangout with do.
but ive seen guys that dont even really have muscle, that have a huge vain going down their arms!!! does anyone know why guys do and girls dont.? (not that i want vainy arms! im just curious!)Health Question & Answer

Answers:

It is usually from lifting weights. Working out causes the veins to expand to allow more blood, which is carrying oxygen, to flow through the body. Low body fat also helps.Health Question & Answer

I have somewhat vainy hands is that unattractive to you.?.?

sorry I was distracted about answering your question. I would think guys vains show more because we have lower body fat. Everyone has those vains but you only see them on athletic guys because they have no fat, its only muscle so you can see the vains easier. maybe.? its just an idea.Health Question & Answer

lifting weights technically makes your veins bigger, so that could be a factor. it could also mean the guy doesn't have much fat. i'm not muscular but i have extremely prominent veins on my arms. (most likely because i have a low BMI)

it could be genetics too, not sure about that though.Health Question & Answer

Working Out and guy Genetics (happy now.?)Health Question & Answer

Damn, I am so vain, I bet I think this post is about me.Health Question & Answer

*Vein

& I personally think it's freaking HOT on a guy.

-drool-

;DHealth Question & Answer

I dont know but it sure is sexyHealth Question & Answer

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Why are (some) guys arms so vainy?!

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