In the course of evolution, some animals have overcome the fear and stress they feel when encountering humans or unfamiliar members of their own species and become less aggressive. (science.sciencemag.org)
But did you know that it can also help reduce the amount of stress you feel in the first place? (thebettyrocker.com)
All of these can be related to the constant stress we feel in our lives. (thehormonediva.com)