10K Postal Swim?

I've never done a 10k in the pool, but I did do an open water 10K in Atlantic City a few years back. Perhaps I am unusual in this regard, but i didn't get thirsty or hungry throughout the race, which took me about 2 hours and 35 minutes. The water was probably in the 77-78 degree range, and my goal was to just finish the race, not to kill myself trying to go fast. Maybe that affected my thirst sensors, who knows? Our workouts last week included two 5500 meter long course practices. Again, I never felt the slightest sense of thirst, though I probably lost about a half gallon of sweat and lung exhaust during the workout--181 lb. before and 178 lb. after. I did take a packet of GU with some water before swimming, but not prodigious quantities by any means--just a couple sips. Do you guys get really significantly thirsty during workouts? Is your pool temperature 84 or above?

I've never done a 10k in the pool, but I did do an open water 10K in Atlantic City a few years back. Perhaps I am unusual in this regard, but i didn't get thirsty or hungry throughout the race, which took me about 2 hours and 35 minutes. The water was probably in the 77-78 degree range, and my goal was to just finish the race, not to kill myself trying to go fast. Maybe that affected my thirst sensors, who knows? Our workouts last week included two 5500 meter long course practices. Again, I never felt the slightest sense of thirst, though I probably lost about a half gallon of sweat and lung exhaust during the workout--181 lb. before and 178 lb. after. I did take a packet of GU with some water before swimming, but not prodigious quantities by any means--just a couple sips. Do you guys get really significantly thirsty during workouts? Is your pool temperature 84 or above?