“All this anxiety better be burning calories” was posted on Twitter by Woman on February 2, 2017.
   
The 2019–20 coronavirus pandemic created anxiety and made the line newly popular. “All this anxiety better be burning calories 😅” was posted on Facebook by Shanna Toomer on March 16, 2020. “All this anxiety better be burning calories 🥴” was posted on Facebook by Claude Williams on March 22, 2020.
 
 
Wikipedia: 2019-20 coronavirus outbreak
The 2019–20 coronavirus pandemic is an ongoing global pandemic of coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The outbreak was first identified in Wuhan, Hubei, China, in December 2019, and was recognised as a pandemic by the World Health Organization (WHO) on 11 March 2020.
 
Twitter
Woman
@AlexisGZall
all this anxiety better be burning calories
4:43 PM · Feb 2, 2017·Twitter for iPhone
         
HuffPost
20 Hilariously Real Tweets About Trying To Be Healthy
“Buying a salad is all fun and games until you have to eat it.”
By Abigail Williams
02/08/2017 04:48pm EST | Updated April 3, 2017
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13
Woman
@AlexisGZall
all this anxiety better be burning calories
2,932
5:43 PM - Feb 2, 2017
 
Facebook
Music Life
September 23, 2019 ·
All this anxiety better be burning calories…
 
Reddit—Showerthoughts
Posted by u/i_harry January 6, 2020
All this anxiety better be burning calories
     
Facebook
Shanna Toomer
March 16, 2020 at 10:55 PM ·
All this anxiety better be burning calories 😅
   
Facebook
Claude Williams
March 22, 2020 at 10:33 PM ·
All this anxiety better be burning calories 🥴
 
Facebook
Nichole Miller
March 23, 2020 at 8:21 PM ·
All this anxiety better be burning calories
 
Twitter
StephTwo hearts
@Steph1984x
All this anxiety better be burning calories.
6:01 PM · Apr 5, 2020·Twitter for Android