By training the orbicularis oris muscle, your expressions become more expressive.

His long talk is just like 'a hundred days of sermonizing without a fart.'

The Bronze Age was an important period in human history.

He is a specialist in cardiology.

The doctor examined my heart using a stethoscope.

Moderate exercise and a balanced diet are important for maintaining the health of the respiratory system.

He attacked the enemy using a flamethrower.

This filter helps to improve the sound quality.

He adjusted the rhythm using a metronome.

I use a pedometer every day to record the distance I walk.