Facilitation among neighboring plants may act by reducing the negative impacts of a stressful environment.

Practitioners believe the environment of residential, commercial and public buildings can affect the health of the occupants, producing a restful or stressful environment.

In addition, the stressful environment suppress species competition and promotes mutualism.

Research has focused on increasing eustress in the workplace, in an effort to promote positive reactions to an inevitably stressful environment.

They have retained the principle of exceptional training without compromise, based on immersion in a highly stressful environment, close to the conditions of combat operations.