Overworking

You may as well have a day off, because you have been overworking those days.

Between overworking and under-sleeping, her health has begun to decline.

For a day, I had been overworking myself.

Are you overworking yourself lately?

Overworking was the death of him.

Gunter was just overworking himself.

My brain is always overworking.

Stop overworking your own mind with such silly questions!

Moreover, the problem was accentuated by the overworking of the assets of the railways in the second world war.