Lots of people keep them at a 90-100 degree hot spot. You keep them at 120 plus (think small monitors) and they are a completely different animal

also want to clarify with my previous comment I don't think beardeds should be kept with high humidity that was more geared towards small monitors but I also think that they could do with more than what most people give. In Australia they cover a huge amount of the country with slightly different terrain and humidity levels all over. I don't think they should be kept strictly like a desert animal with no water bowls like some people believe