Histidine is one of the essential amino acids that cannot be synthesized in the human body.

The anal sphincter is an important part of the body.

Infection with candida is particularly dangerous for people with weakened immune systems.

He exercises his vastus lateralis muscle at the gym every day.

He is doing special exercises to strengthen his vastus medialis muscle.

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

He is doing special exercises to strengthen his platysma.

The internal anal sphincter is a muscle that helps us control defecation.

Like this, we deepened our friendship.

The doctor diagnosed a problem with his anus.