A friend of mine used to put ice in his beer, on the theory that the extra water he was adding in would counteract the dehydrating aspect of the beer itself.That sounds like a seasoned alcoholic lol. I'm doubting that the ice really makes much of a difference though. Beer is mostly water anyway. He probably just had a high tolerance and was good at pacing himself
It seemed to work for him, he used to claim he never got hangovers afterwards.