Is this some sort of chi/energy?

Hi, I have this weird thing that I can do which makes my body feel "over-energized" and it feels as if pure energy and blood is rushing through my body. I don't really know how to explain it nor do I know what it does. Anyways, I "activate" this by concentrating mentally. It kind of makes my feet and hands a little hot/sweaty and makes me want to jump up and do something or in other words, kinda hyper. However, if I do, I usually break my concentration and lose the feeling. Can anyone else do this or I'm I just weird?