To me, as long as you're drinking a bottle of water with it I see no harm. You get hydrated from coffee. Of course you need to drink water in general, but the concept of drinking cups of water to balance out dehydration from coffee is just a myth.
Reptiles do not maintain their own body temperature within a narrow range like mammals and birds, so controlling their environmental temperature is critical for normal activity and good health. Reptiles are poikilothermic-which means that their body temperature alters with the surrounding environmental temperature.
Not only will a lower body temperature let you and your doctor know of your illness,it also helps to assess the correct dosage of meds to take. The underperforming thyroid drops your temp due to its effect on the metabolism, which has a great influence on temperature. 1  Low Metabolism.