Massage your ears often

It is no exaggeration to say that the ears are a miniature version of our body, so it is said that massaging them frequently is beneficial!

The method is very simple. Fold the ears in half, unfold them, and then pull them up, down, left, and right.
Pulling your ears straight up tucks in your chin and straightens the back of your neck, and this posture is said to be particularly helpful for people with straight neck or forward head posture.
Take care of your health and correct your forward head posture—killing two birds with one stone.

I think it would be good to do it little by little whenever you have some spare time.