What was this show called?

I'm trying to find a show I used to watch when I was younger. I can't remember much about it, so I'll just list the things I do remember (I'm not 100% clear on anything in this list).

The main characters were short things that lived inside a tree, or something.

They had juice that made them jump, or gave them energy.

The bad guys were big trolls.

I think the word "jumping" was in the title.

I think there may have been a human with them, but I'm not sure.

The main characters may have been bears? or dwarfs? I can't remember.

The theme song may have had a line in it that went like this: "jumping, jumping, jumping everywhere, high up [something something something]"