The rectus capitis anterior muscle is part of the neck muscles, helping to bend the head forward.

Please go straight on this road.

He spoke to me directly.

His opinions are always direct, and that's part of his charm.

He is a very sincere person.

I should do my duty.

I do strength training every day.

If you train your external oblique muscles, your waist will become tighter.

The internal oblique muscle is a muscle that helps with the body's rotational movements and lateral bending.

He lost everything.