Cold hand after exercising

Upon completing an exercise session (treadmill or elliptical) of 30 to 45 minutes my "left" hand is very cold (my right hand is warm). Is this a symptom of a serious health condition?  What are the possible causes?

[Believe]

Hello,

I am vegetarian and also experience cold toes and or hands especially after exercise. I also have low blood pressure which I think might cause me to be a bit more sensitive. I learn though from a trainer at the gym, that my body started to burn protein after burning fat- I watch my protein consumption before and after a work and out and have found not only to I stay warmer, I also feel more balanced and can last longer.

I will be interested to hear what other have to share.

[willtme]

You also cannot rule out a circulation problem of some sort, especially if you have ever experienced injury to that arm/hand.