Other Reddit users were quick to jump in the comments to find out how he did it.

And there is one popular diet plan he followed to slim down - the keto diet.

He also used intermittent fasting to slim, particularly around his waist.

The dieter wrote: "The last 4-5 months I’ve done 16-8 IF. It’s helped a lot with the plateaus. I’ve been doing that plus weight training lately and have had great results.