10 months ago
Last edited at 3:20AM on 6/11/2013
This is a very common thing and happens to a lot of people. It tends to happen to me a lot of the time when I have been standing or doing other physical exercises, or if I just feel fairly warm in general. More blood is pumping through the veins and the muscles aren't as relaxed. It is completely natural. If it was in your legs, however, then I'd be a little worried, but I am sure you have nothing to fear. You're all good ;)
Wait, are they there constantly, or do they only appear every now and then?