Kara walked into the gym, intending on lifting weights. Keeping in shape has been part of her job even before the fleet, when she was still aiming for pro Pyramid. So working out and keeping in shape is second nature to her now.
She notices the girl at the punching bag, nods to her and heads to the weights. She watches the girl, she's young, but she's good, she's really tearing into the bag. She's impressed, and it takes a lot to impress Kara.