Tingling Hands More Condition_symptoms What Does This Tingling In My Hands Mean?

What does this tingling in my hands mean? - tingling hands more condition_symptoms

Ok, so I am always nervous before a presentation. I am so happy that my voice did not, but shook this time! But I have noticed that some tingling in his hands just before he disappeared shortly after. And yet my hands fall asleep. Anyway, I know that has to do with my nervousness, but can you explain what is happening in my body that produces this symptom?