I've been noticing that my legs can get easily bruised. Like I would just wake up and see bruises that I have no idea how I got them. In cold weather, the veins on my legs and hands shows more. It doesn't bulge through my skin, there's just a few red veins showing through the skin.

Is that normal? Is that a sign of bad blood circulation?

My skin reacts the same way as your does during the winter or when I'm in the cold. I asked my doctor about it during junior high and she told me it was normal. Don't worry about it