Researchers measured people's cortisol, which is a stress marker, while they were at work and while they were at home and found it higher at what is supposed to be a place of refuge.

As we stood there, watching, we talked about how much we loved playing in those woods together; how it gave us all a sense of belonging and a place of refuge.

Within minutes we were passing the distinctive yellow exterior of the Sarajevo Holiday Inn, the place of refuge for journalists covering the siege between 1992 and 1995.