“I was told that exercise helps with your decision making” (joke)

Does exercise help the mind? A joke is:
   
“I was told that exercise helps with your decision making. It’s true. After going to the gym earlier, I’ve decided I’m never going again.”
 
The joke was posted on Twitter on July 3, 2014,
 
   
Twitter
James Casserly‏
@Casserly_Rock
I was told that exercise helps with your decision making.
It’s true.
After going to the gym earlier I’ve decided I’m never going again.
1:01 PM - 3 Jul 2014
 
Twitter
Marc MUFC©®™‏
@marcutd9
I was told that exercise helps with your decision making.
It’s true.
After going to the gym earlier
I made a decision never to go again
1:44 PM - 3 Jul 2014
 
Twitter
Sickipedia Official‏
@sickipedia
I was told that exercise helps with your decision making.It’s true.After going to the gym earlier I’ve decided… http://bit.ly/1rreRCU
9:35 PM - 3 Jul 2014
       
Facebook
Rude Rabbit
July 12, 2016 ·
I was told that exercise helps with your decision making. It’s true. After going to the gym earlier I’ve decided I’m never going again.
 
Twitter
Bob Kostic‏
@causticbob
I was told that exercise helps with your decision making.
It’s true.
After going to the gym earlier I’ve decided I’m never going again.
3:39 AM - 26 Oct 2017
 
Twitter
Shit Jokes‏
@ShitJokes
I was told that exercise helps with your decision making.
It’s true. After going to the gym earlier
I’ve decided I’m never going again.
8:26 AM - 18 Nov 2017