Tugging at the fleshy area of the neck

Neck touching and/or stroking is one of the most significant and fre-
quent pacifying behaviors we use in responding to stress. One person
may rub or massage the back of his neck with his fingers; another may
stroke the sides of his neck or just under the chin above the Adam's apple,
tugging at the fleshy area of the neck.

What does 'tuggging at the fleshy area of the neck" mean here.

Thanks