He waved and then pushed himself up on the bed.

He pushed himself up to sit on the edge of the pool.

Pushing himself up on his elbow, he turned toward the door.

The woman pushed herself up on her elbows, trying to rise.

He pushed himself up on his knees with an effort.

I started pushing up on the window really hard and my hand broke through the glass.

And Newton's third law says, that your hand must be pushing up on it.

Then a thought occurred to him, and he pushed himself up on his elbows.

An example is the force of a chair pushing up on your body when you are sitting in it.

While I watched, the girl in the other bed turned onto her side and pushed herself up on one elbow.