Cold blooded animals still produce body heat, just like you feel warmer after exercise. They may not have any methods to keep their body temperature much higher than the surroundings, but wouldn't want to become too cold either.
Edit:
While many snakes hibernate in solitude, there are some species who hibernate in groups. This is so they can preserve warmth in their dens through the winter.
From a quick search: there haven't been conclusive studies, but orcas can as old as 30 or 40.
So, given that "dog years" are essentially the life span of a human divided by the life span of a dog, "orca years" would be twice or thrice that of a human.
I like Nebula. It's not too expensive, there's a lot of great creators, and it's an easy way to support a variety without subscribing to all sorts of Patreons.
Did anything more happen?
I stopped watching them after Frost's video. Which is a shame, I did like Yahtzee and didn't mind Design Delve.