He is doing special exercises to train his serratus anterior muscle.

He bought a new saw.

The serratus posterior superior muscle is one of the muscles that assist in the respiratory movements of the lungs.

I strained a muscle at the gym yesterday.

He bought a new saw.

I go to drink coffee in front of the station every day.

I remember talking to him before.

I used to live in Tokyo before.

He exercises every day to strengthen his tibialis anterior muscle.

He started a special exercise to train his serratus posterior inferior muscle.