Parker Posey isn't surprised about Mike White 's 6-pack at all ... telling us "The White Lotus" creator works out like crazy -- and he's got a trainer to boot. We caught up with the longtime actress at LAX Monday ... and since she starred in Season 3 of the hit HBO show last year, we had to ask her about White's shocking physique. Remember ... White ripped off his shirt on the "Survivor 50" premiere last week, and his toned body certainly turned heads. Parker says Mike's always working out ...

Tag-uri: HBO