I've got a few questions here, the first one is, what causes the massive veins (size not quantity) I see on some pro wrestlers and body builders, I realize to some degree it's genetic, I'm curious what causes that (age, weight lifting, cardio/sports, steroids)? I realize that people with low body fat will be veiny freaks but this is more about the size of veins than their visibility. I'm also curious if large veins are benificial or if they are more of a health problem (leading to low blood pressure or poor circulation).
Another question is more of a personal vein thing, I'm curious if it's common for the veins in one arm to be significantly smaller than the other. My left forearm veins appear "normal" to me, but my right arm the same veins are about half the size and half the distance apart. I'm not sure if those veins have always been smaller but they have been that way since I was around 10 years old, I've always been a little curious about that since I first noticed it.
Another question is more of a personal vein thing, I'm curious if it's common for the veins in one arm to be significantly smaller than the other. My left forearm veins appear "normal" to me, but my right arm the same veins are about half the size and half the distance apart. I'm not sure if those veins have always been smaller but they have been that way since I was around 10 years old, I've always been a little curious about that since I first noticed it.