Tom Cruise (Mission: Impossible — Rogue Nation, 2015)
Tom Cruise explained in an Access Hollywood video when Mission: Impossible — Rogue Nation was released that “normally in underwater sequences, people hold their breath for 10 seconds, 15 seconds max.”
But he says he of course learned to hold his breath for six minutes for a sequence in which his super-spy Ethan Hunt has to infiltrate a place to get a thing and of course can’t wear any scuba gear, because.
Long story short, there’s nothing Maverick won’t do to show up Iceman. (Kilmer, of course, played Iceman opposite Cruise’s Maverick in Top Gun, released in 1986.)