The Papua fire-eating bird, with its unique appearance, is a bird you won't forget once you see it.

We are aiming to kill two birds with one stone with this plan.

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.