KINGSPORT, Tenn. -

Another step forward for a little boy from king sport who underwent a rare heart and double lung transplant just before Christmas.

Seven-year-old Weston Keeton's mom told us she had to put his tricycle away after surgery, but now he's pedaling around and giving his new organs a real workout.
    
Weston is still hooked up to a breathing machine but doctors are working on getting him off it.

It doesn't seem to be getting him down though, and he even manages a thumbs up for the camera while playing video games.

Weston is at the Children's Hospital of Philadelphia.