He is training his brachialis muscle every day.

He stretches his extensors every day.

He is training his oblique muscles at the gym every day.

He is doing special exercises to strengthen his tongue muscle.

He is doing special exercises to strengthen his dilator muscle.

He is doing special exercises to strengthen his pectineus muscle.

She exercises every day to strengthen her gracilis muscle.

It's important to train your antagonist muscles as well when doing muscle training.

As I was walking down Tenkajiku, there were many shops lined up.

If the movement of the eyeball muscles becomes impaired, your vision becomes blurry.