T-minus 8 days until the return of Conor McGregor ... and no one seems more excited than Conor himself!
Check out the Irish superstar in a pre-fight workout at the UFC Performance Institute in Las Vegas earlier this week -- his energy is through the roof.
As we previously reported, Conor returned to America a few weeks before the January 18 bout with Donald "Cowboy" Cerrone ... and he's been training like crazy.
During this week's workout session, Conor was bouncing around the gym while Notorious B.