If yes, you may be interested in this information.
Cold hands are a sign of an overactive autonomic nervous system.
More specifically, the signs of an overactive sympathetic nervous system. Our emotional and physiological self are controlled by the autonomic nervous system - a system that increases and decreases our heart rate, breathing rate, etc. These groups are known as the sympathetic nerves and parasympathetic nerves. Many muscles tense during this stimulation. This is a primitive reflex response which prepares us to flee from a threatening situation.