The external intercostal muscle plays an important role in respiration.

He is doing special exercises to strengthen his intercostal muscles.

Training the respiratory muscles is very important for aiding breathing.

He worked hard to accomplish his goals.

His role is the team leader.

Health is very important.

His opinion is very important.

He injured his intercostal during a soccer match.

He is doing a special exercise to strengthen his internal intercostal muscles.

I strained a muscle at the gym yesterday.