This bit of information will be helpful for those people who ride with limited time.

Is the Exercise Cool-Down Really Necessary?
by By GINA KOLATA, New York Times
The problem, says Hirofumi Tanaka, an exercise physiologist at the University of Texas, Austin, is that there is pretty much no science behind the cool-down advice. The cool-down, Dr. Tanaka said, “is an understudied topic.” …

DFW Point-to-Point: Raising the Flag of Cycling Controversy
by Steve A
That didn’t stop the Fort Worth policeman who told me earphones were illegal, despite there being no Texas or Fort Worth law on the subject. I’m reminded of the saying, “opinions are like armpits, everyone has two and they all stink.” …