My sav has contagious sleep, she'll fall asleep on my chest or shoulder and before you know it I'm fighting to stay awake lol. She did it to me on the reptile room floor today. The room is COMPLETLY lizard proof so she can't escape or hurt herself or tear any thing up (I had a lot of time to prepare while I was waiting for her). All she can do in there is walk in a large square. I accidentally nodded off for 10 or 15 mins and she has still sleeping on my chest, then she got down and started to waddle in a big circle. Believe me this is or will not be habit but I think it's funny, it's like when some one yawns every one else yawns (kinda a chain reaction). My advice is escape proof any room that you keep or hold your reptile in (especially if you have other animals i.e. dogs or cats). If an accident happens you'll be glad you did.