Trunks stopped, turning and staring at her for a moment. Studying her, then tilting his head. "It's a lot less wobbly now, but low. Probably because we've all been doing so much, on missions." Meaning they were exhausted--hence the vacation.

"Accessing ki, and using it, can be trained and often is, via martial arts. Think of it, in its most base form, as a way of being centered. Of your whole body and mind and soul being aligned and in balance." A hint of grin. "I'm sure you've felt that a few times, while you've been superheroing about."