He is doing a special exercise to train his occipitofrontalis muscle.

Life is a series of ups and downs.

We need to improve the city's infrastructure.

Life is a series of vicissitudes.

That stylish use of language is charming, albeit archaic.

Thank you for your hard work until late.

Kujō Yoshitsune, the former Prime Minister and Regent of the Go-Kyogoku, played an important role in Japanese history.

He is suffering from post-traumatic stress disorder from the war.

The rectus capitis posterior major muscle is a part of the neck muscles, and it helps in the action of pulling the head backwards.

The rectus capitis posterior minor muscle is a part of the neck muscles, and it helps tilt the head backwards.