What inherent trait of ectothermy contributes to the Gila monster's low energy demands?

Answer

Relying on external temperatures to regulate internal processes

As reptiles are ectothermic, they rely on external temperatures to regulate their internal processes, which inherently results in lower energy demands compared to endothermic mammals.

What inherent trait of ectothermy contributes to the Gila monster's low energy demands?
reptilesurvivallizardfastingGila Monster