During REM sleep, we dream the most.

Recently, I've been feeling heavy-headed due to lack of sleep.

This plan is proceeding perfectly without any excess or deficiency.

He fell ill due to long-term malnutrition.

In math class, I learned about deficient numbers.

His ears are very good, so he can hear distant sounds.

The first time I heard his name was at that party.

Recently, my tinnitus has been so bad that I decided to see a doctor.

Understanding numbers is important for solving math problems.

He was bedridden with illness for several days.