When you head to the theater to see Top Gun: Maverick this weekend, it should be pretty clear that most of what you're seeing was done practically, rather than with digital effects. The cast was really flying in those jets, going through some pretty intense maneuvers--and they had to train for it.

Chances are by now, you've heard about the boot camp, of sorts, that star Tom Cruise put together for his castmates. Well, according to the cast of the second Top Gun film, it was an even more intense experience than you might have expected. Cruise wanted to make sure his fellow actors were ready for the experience of flying the high-caliber fighter jets seen in the movie and--if Miles Teller is to be believed--there was definitely some vomiting that happened.

"For some of the actors involved in this, regardless of what they tell you, for some people, they puked on the first day and they puked on the last day," the actor told GameSpot. "It was never something they really kind of got too comfortable with." He added, "Out of the six pilots, there's three of us that never puked, never passed out."