Holly Holm -- Training For UFC Revenge ... With Jon Jones

What do we do when we fall off the horse?

If you're Holly Holm... you get your ass back in the gym and start training with some of the best MMA stars in the world.

Here's the fallen champ posing for pics at the Jackson Wink MMA Academy in Albuquerque Friday after working out with Jon Jones and Joanna Jedrzejczyk.

Thursday, Holm was rollin' with BJ Penn and Roberto Alencar.

Holm has vowed to bounce back after her loss to Miesha Tate and win the UFC belt back.

This ain't a bad way to start ...