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
Grinding (gaming) in-game aspect which requires the player to engage in grinding. Grinding has led to some players programming scripts, bots, macros and other automation tools to perform the repetitive tasks. This is usually considered a form of hacking or an exploit by the game's developers, and will often times resort in a ban. Due to the controversial subject of grinding, this act is sometimes, but not always, frowned upon in the gaming community. Several answers have been suggested for the question of why players grind. A major motivating factor is the players' desire to pursue what appears to be the game's