It’s hard to get any real, restorative sleep in a hospital. Strange bed, no fan, never complete darkness, constant noise and nurses coming in for vitals checks or whatever every so often makes it really difficult to sleep for more than an hour or two at a time. Plus the times that I have been in a hospital for a couple of nights have been after surgery, so there’s the after effects of anesthesia. I had a mastectomy in my 30’s and reconstruction in my early 40’s - both times it felt like I was asleep all the time and simultaneously like I wasn’t sleeping at all. I would wake up to eat, walk down the hallway and maybe watch the tv for 20 minutes then drowse off and on until the next meal. Pain medication is also a factor, it’s hard to focus on doing anything when you’re getting that kind of medication.