As people age their skin gets thin and "papery". In some places like the hands there is less fat under the skin.
Blue veins showing through the skin does have something to do with working out. This happens when your blood vessels swell.
Look at the back of your hand. Do you see some branch-like blue things showing? Those are your veins.
The blood in the veins is red, but appears to be blue, especially in older people, when seen through the skin.
Blue Veins was created in 1999.
There really isn't a cause, it's just the lack of melanin or the thickness or your skin at that point. If you are really pale you have a higher chance of blue veins showing. On areas like your hands you can see veins because your skin is thinner there. On areas like your lower legs, the veins are larger and are therefore more visible.
the color of your veins is blue
the veins are blue.
Nothing - it's when your veins aren't blue that there's a problem.
Blood is blue in your veins!
A blood seems blue in veins because when a blood is in veins they are low in oxygen and therefore look blue. When they get oxygenated, they become red and are carried by the artery.
No, it is not bad. Every one has the same kind of veins in their hands. This is a normal thing to have.
Blood is not blue. That found in veins are slightly darker than those found in arteries (usually). You may have seen drawings in which the veins are blue but is just to indicate that these blue vessels are veins.