"I don't need all of it," Natasha says, walking further into the room and then stepping to the side to slip off her shoes. She's dressed for practice: yoga pants, a t-shirt, her breasts flattened slightly with a sports-bra with enough support for her to actually move.

"All that's free are the punching bags, got sick of staying in the same spot."

The bags are useful, very much so. But Natasha's always moved when she's fought, and besides, there are other things she needs to practice.