She exercises her facial muscles every day to keep her face youthful.

She was massaging her nape.

He is doing special exercises to strengthen his cervical muscles.

He trains his deltoid muscles at the gym every day.

He has strong masseters, so he can easily bite through hard food.

If your muscles of mastication are strong, you can chew food more efficiently.

We should always remember the power of Kannon in difficult times.

He is doing special exercises to strengthen his tensor fasciae latae.

Understanding the rules of 'Ha-gyou tenko' is difficult.

He started exercises to strengthen his gluteus medius muscle.