This woman thinks laying down on the conveyor belt is for losers. That's the passive way to go about getting a great airport photo - it requires minimal effort! She's taking a much more active approach to getting a funny picture to show her friends.
We suspect she's done this before. That pose looks practiced to us. Maybe she's had martial arts training, or she does parkour. Either way, she's not someone we'd want to take on in hand to hand combat.