Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Letters indicate similarities and differences between seasons (i.e. all seasons marked with an ‘a’ are similar, but differ from those marked with a ‘b’). Cortisol values were higher during the fall of 2011.
