(Not sure if this topic will have much traction, but I guess there's only one way to find out. )

Do you know of or utilise any exercise/fitness facilities INSIDE the airport terminal? So far I've only encountered one airport that has a "fitness room" inside of security. Wondering if there are others out there so that we can assemble a list?

EDIT TO ADD: Since it's still TBD how many "inside security" options there are, why don't we just start to assemble a list of "places you get a workout when you're at the airport with a layover" and see what we can come up with!

DFW - Dallas-Ft. Worth
Terminal A - American Airlines Admirals Club: Small exercise room adjacent to the shower facilities; contains one treadmill, one recumbent bike, and one elliptical machine.

LHR - London Heathrow
Terminal 4 Hilton: Attached to the terminal; has an excellent fitness centre that sells single-visit passes with no requirement that you be a hotel guest. It's good enough that they also sell memberships to locals, and have quite a few takers. (link to post)

ORD - Chicago-O'Hare
ORD Hilton: Across from the airport; rates available for passengers on layovers to utilise health club. (link to post)


Other useful information/sites:
- http://www.airportgyms.com/ (with thanks to magiciansampras)