He is hitting the head with a hammer.

He is hitting the roof because of the noise.

He is hitting the nail on the head with his analysis.

She is hitting the books to prepare for her exams.

She is hitting the big time with her latest album.

The project is hitting the buffers due to lack of funding.

He was hitting the deck to avoid the flying debris.

I am hitting the sack early tonight.

He is hitting the skids and needs to find a new job.

She is hitting the ground running in her new job.