Parafunctional activity crew. Parafunctional activity A para-functional habit or parafunctional habit is the habitual exercise of a body part in a way that is other than the most common use of that body part. The term is most commonly used by dentists, orthodontists, or maxillofacial specialists to refer to para-functional uses of the mouth, tongue and jaw. Oral para-functional habits may include bruxism (tooth-clenching and/or grinding), tongue tension ("tongue thrusting"), fingernail biting, pencil or pen chewing, mouth breathing, and any other habitual use of the mouth unrelated to eating, drinking, or speaking. Crenated tongue is a descriptive term for when scalloping develops
Habitual be the introduction, and subsequent loss of habitual "do (be)" in America, which was also the problem with the first expansion of the diffusion hypothesis. Another hypothesis for the origins of habitual "be" in NWBE and afterwards into AAE is the most logical and the strongest of the lot. The decreolization theory for the emergence of habitual "be" in AAE is the most likely and most supported of the theories of its origin. It involves the decreolization process of Caribbean English creole, with the loss of "does (be)", which itself is a decreolization of a previous creole habitual marker and its