He is acting in a way that is like 'hide the head but forget the tail'.

The clitoral glans is a part of the female genitalia and is very sensitive to sexual stimulation.

He is doing squats to train his quadriceps femoris muscle.

The tobi-kashira-mukade is a very rare creature.

He is doing squats to train his biceps femoris muscle.

He is training his triceps brachii muscle every day.

He goes to the gym every day to train his triceps surae muscle.

The splenius capitis muscle is a part of the neck muscles, helping to tilt the head backwards.

The semispinalis capitis muscle is a part of the neck muscles, helping to tilt the head backwards.

The obliquus capitis superior muscle is part of the neck muscles, helping to tilt the head.