She lay down on the bed and tried to think things over.

I lay down on the bed and started thinking again.

I lay down on the bed and tried to keep from thinking.

Then I lay down on my bed, and we both didn't say anything for a long time.

He went up to his room, lay down on the bed to try to think things through, make some sense out of the day.

I lay down on the bed and began at the beginning.

His mother lay down on her back in the middle of the bed.

I lay down on the bed in my room and looked around.

Or She lay down on the floor and got under the bed.

He got out of the car and just lay down on the ground.