Tim McGraw/Back When .. 10 - 2 - 4??

Thanks to Mark Patric (mpatric@jrfm.com), Asst PD at JRfm, Vancouver for passing along the info from the station's swing guy, Dan Baker, (dbaker@jrfm.com) who found the gnawing answer to the question being asked by loyal listener line callers right now:

What is the meaning of "10-2-4"?
An early study on human fatigue showed that human energy dropped to its lowest levels during the day at 10:30 AM, 2:30 PM, and 4:30 PM daily. Therefore, drinking Dr Pepper at 10 AM, 2 PM, and 4 PM would boost energy. Thus the "10-2-4" symbol!

Now, you KNOW.