“If you run/jog backwards, will you gain weight?” is a jocular question that has been included on many lists on one-line sayings. “If you jog backwards, will you gain weight?” has been cited in print since at least 1999.
 
   
SUPER HART’S JOKE COLLECTION PAGE 18
This Page created on November 7, 1999!
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CARLINISMS FOR THE MILENNIUM
If you jog backwards, will you gain weight?
   
Google Books
The Mammoth Book of Humor
By Geoff Tibballs
New York, NY: Carroll & Graf Publishers
2000
Pg. 222:
f you jogged backwards, would you gain weight?
 
Google News Archive
16 April 2000, New Straits Times (Malaysia), Style, pg. 5, col. 4:
If you jog backwards, will you gain weight?
 
Google Groups: comp.sys.ibm.ps2.hardware
Jim Hall
10/6/00
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If you jog backwards, will you gain weight?
     
Lucas Forums
Elessar-Earfalas
12-21-2002, 10:10 AM
If you run backwards will you gain weight?
heh, this is just a funny thread for the swamp, to make some people laugh…
 
18 July 2006, Winnipeg (Manitoba) Free Press, “In the Doug house” by Doug Speirs, pg. A2, col. 1:
11) If you jog backwards, will you gain weight?
 
Nabila Athooyaa
If you run backwards will you gain weight?
Posted by Nabila Athooyaa at 11:54 AM (February 15, 2012)
don’t think so you’re still running..