stay in bed
fixed phr..fixed phr.. To remain in your bed after you wake up, or to not get out of bed because you are sick.
fixed phr.. To remain in bed, typically after waking or due to illness; a common verb phrase collocation.
I want to stay in bed all day today.
When you have the flu, the best thing to do is stay in bed and rest.
He felt so despondent about the news that he decided to stay in bed, pulling the covers over his head to block out the world.
Often used to talk about being sick, lazy, or simply wanting to relax on a day off.
Contrast this with 'go to bed' (the action of getting into bed to sleep) and 'get out of bed' (the action of leaving the bed).
I want to stay on bed.I want to stay in bed.Use the preposition 'in' for being under the covers in a bed, not 'on'.