The phrase 'keep on sleeping' is correct and usable in written English
You can use it to suggest that someone should not wake up, or to advise someone to continue sleeping. For example: "You were up late studying for your exam. Don't worry, just keep on sleeping - you need the rest."
Mr. Maestri keeps on sleeping.
He managed to fill it with trash and kept on sleeping outside.
However, many people find this addition to be too much of a hassle and as it is rarely kept on during sleep, it can be a nuisance trying to find a place to keep it.
This kind of background sound also acts as a buffer, so any sudden noises (like birds chirping, a roommate returning home, or your hallmates' loud music) are masked -- and you keep right on sleeping.
Many parents invest in a video baby monitor to keep an eye on sleeping babies in a room across the house, but some use video monitors or Web cams to observe nannies and babysitters at work.
At night, the children gather together to keep warm, sleeping on thin mats laid directly on the floor of their house, which is just four barren concrete walls and a leaking roof.
All that drive, all that competitiveness, all those early starts to get on with plotting campaigns and all those late nights to keep on plotting triumphant campaigns... Ferguson slept little and won loads.
We can keep sleeping on the ground every day for a month, and they just don't care," Kenneth Wong, an occupational therapist protesting outside the National Day ceremony, told The WorldPost.
Wright and his colleagues outfitted eight subjects with activity-tracking watches that carry light intensity detectors and motion sensors to keep tabs on sleep and wake times.
Maintaining the routine can be a sweet way of staying connected with the spouse, and it also can be a way to keep on getting a good night's sleep.
