So Tiamat normally spends the majority of the day laying on his log on the cold side of the viv. I use an Acurite temp sensor, temps are about 90-100 degrees. When I pick him up, he's cold to the touch. When I put him back into the viv, I put him under the basking light, he'll sit there for a few minutes, then move to the cold side. Been doing this about a month or so.