He is doing a special exercise to strengthen his inferior rectus muscle.

He is doing special exercises to strengthen his medial rectus muscle.

He is doing special exercises to train his serratus anterior muscle.

He exercises every day to strengthen his tibialis anterior muscle.

He got angry over a trivial matter.

He falsified the fact to hide his mistake.

He told me the whole story of the incident.

His opinions are always direct, and that's part of his charm.

He is a very sincere person.

I should do my duty.