"Sort of," Bones says, stopping in front of Percy. "When you go quickly from regular gravity, to anti-gravity to warp and back again, it tends to mess up your equilibrium. Just sit down and take it easy and you'll probably be fine. You think you're gonna throw up, kid?"

Bones may be a doctor, but he's not a fan of vomit. If he's going to throw up, he'd like a chance to move out of the way. Fortunately, Bones himself has been through warp so many times that it no longer makes him nauseated.