Princess doesnt want to leave her bed!

[WelshHammi]

I am just wondering about hamster sleeping habbit? Pickles is now coming up about 20 months old, as the temperature has dropped the heating is on and she is as snug as a bug in a rug! She does not want to get up!! Is this an age thing but when she is out she is wild! Or just her saying I’m comfy leave me alone Mum! If I go an speak to her she sniffles and snuffles at me pokes her nose out and then goes right back in!
I did a health check other day all fine few of the old timer symptoms happening but everything else fine!

Just wondered if this was normal! Is my princess getting old!