sentence: Stress can be physical or mental.
sentences_before: Stress' is a word used in biology and medicine to describe a number of reactions that can be seen in organisms.
sentences_after: The word 'stress' can describe a pressure or other force, like the pressure of a person's upper teeth on the lower teeth while chewing. For example, a stress fracture happens when there are repeated impacts on a bone.
concept_name: stress
headings: Stress (biology)
categories: Health Biology