wow! I can only make it about 45 minutes without getting up to go on a flight. If I am not drinking booze I am downing lots of water to fight dehydration! Holding it in or stopping is not good for your body. Stopping BMs is one thing but stopping peeing is just not healthy.
According to my friends they can set their watch by the 45 minute intervals between my trips to the bathroom (not just on a plane)