The researchers call the vigilant mode First Night Effect (FNE) because it is transient, diminishing after the subject gains familiarity with the new environmen

The researchers call the vigilant mode First Night Effect (FNE) because it is transient, diminishing after the subject gains familiarity with the new environment. I wonder how FNE varies according to the risk nature of the environment. For example, a fine hotel in Aspen compared with homelessness on the streets of San Francisco. It is an obvious conjecture that the vigilance ought to persist in the higher risk environment. If so, I wonder (a) how the effect might vary over time in the high risk environment, and (b) what health consequences ensue from chronic FNE?