I know it gets hot up north too but down here that head last way longer. I know that going to Disney sucks unless is in the winter/spring cause the heat and humidity makes you so tired and weak.I'm not sure actual injuries but I've heard it discussed that living in Florida you're kind of in a natural state of dehydration from the constant heat and humidity. That doesn’t mean when it's 100 degrees in September an up north team won't be run through compared to us, but there is still a level of fatigue and stress on the body that can complicate things over time.
Less scientifically I hear the constant heat and humidity also affects Florida brains which is why there are so many crazies.