I wasn't sure where to post this so I descided here was good.

I can do this...Thing... where I can send a rush of energy throughout my body at will and it feels very much like an adrenaline rush but not exactly like one. I've looked this up with only limited success on finding out what it is, but I have found out that it's not just me that can do this. So I ask...

Do you know what I'm talking about or do I just sound crazy?

Do you know what this is, exactly?