just on your arms? thats wierd. i have no clue why that happens. i know when i turn red, most of my upper body turns red, inlcuding my face.
There is a syndrome where your capillaries tense up and it makes your skin turn red. I don't remember what it's called but stretching and massaging the area should help if we are talking about the same thing.
you mean red blotchy-ness? that used to happen to me when i got in the cold gym under the neon lights. hmmmm