Is it grammatically correct?

I will go lie down in the bed after a couple of hours sitting at the desk

Question

Is it grammatically correct?

I will go lie down in the bed after a couple of hours sitting at the desk

Answer

Yes, perfect!

You could also say "in my bed" if you're speaking about your own house.

Answer

I will go and lie down in my bed after having had sat at my desk for a couple of hours.

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