it sounds like, you have never had one of your dogs, on a very, strong winter hare, on the fens, as if you did not give the dog, electrolytes, after that, it would most certainly, die!!
Equally, a hard night on the lamp, would do the same!!
if you also push your dog, over several seasons, without electrolytes, it will be burnt out early in its life, with mucele waistage!!
i am sure, you will have a long story again, to correct me, but i will not, answer it, as folks like your self, all ways have the last word.