"Cheat day today. made a decision to treat myself to this extra large donut, gosh it's heavy", he jokingly captioned the snap.
The amusing business continued in the comments section, as Pratt, 41, jokingly asked his pal to take things down a notch.
Teasing Marvel fans in anticipation for an upcoming crossover of Thor and the Star Lord in "Love and Thunder", Chris Pratt took to the Instagram account of his fellow superhero and namesake, Chris Hemsworth, to ask him to stop working out and gain some weight "real quick".
However, Hemsworth went on to tell his pal that he thought he had a solution. However, there's at least one star who isn't happy about Hemsworth's incredible body.
"Don't worry mate we can just both use the same fancy filter that's been applied here", the actor joked.
Chris Pratt Jokingly Begs Chris Hemsworth to Stop Working Out
It has also been reported that the Guardians Of The Galaxy will feature in the film, which isn't that much of a surprise when you consider that Avengers: Endgame concluded with Thor joining them on their ship.
The ever-growing cast of Thor: Love and Thunder will not only see a few Guardians make an appearance, but also the return of Tessa Thompson as Valkyrie, reportedly Tom Hiddleston as Loki, and, the biggest of them all, Natalie Portman as Jane foster soon-to-be The Mighty Thor.
"Very excited, excited to try to do something different, you know, the last three movies I think we certainly pushed the boundaries and created different versions of the character and now people are expecting some dramatic changes".
"For sure there will be a lot of love and a lot of lightning in this production".
In January, Taika Waititi's sequel Thor: Love and Thunder is starting its Australian shoot with a sprawling cast assembling for what one insider is likening to "an Avengers 5 feel", thanks to its ensemble. I'm glad that after everything that happened in Avengers: "Endgame, I'm still part of the Marvel Universe and we can continue the story of Thor", he added.