spot on, i found that as well you get it alot more in muscular type dog bullxs , it not the size of the dogs it how made up physically . i had 3 bullx greys before all about 26in 70- 75 lb all would be really stiff next day from nights lamping , now my dog now Buck 1x gsd x grey a bigger dog 28in 85 lb , but far more agile and supple type dog, never gets the same prob as my bullx greys got. But what did for any dog ive had , after a night lamping, towel them down even if there dry, stretch out there shoulder and hips, and back. Then put heat lamps on in there kennel, the heat lamp