Sharing a before and after image to Imgur, the man revealed how he tweaked his diet to achieve his goals.
Explaining his diet, he said: “Flexible dieting is a method of eating that involves quantifying the food we eat in order to produce a favourable body composition.
“We do this by finding out how much food our body needs (calorie intake) and how much of each type of food our body needs (macro-nutrient intake) then using this information to track the food we eat each day.
“After we find out the number of calories our body needs to maintain its weight we can apply a 20 per cent increase in calories for weight gain or a 20 per cent decrease in calories for weight loss.
“But that’s all well and good and we can find and calculate all these numbers and values relatively easily, but applying it to our lives is a different ball game, so in order to turn the theory into application we need to have the tools we need at our disposal.
“The first tool we need is a calorie and macro-nutrient calculator; these can be found online. Use these calculators to find your own numbers by inputting the various personal details.”
He then explained what to do once these numbers have been discovered.
He wrote: “Once we find out the numbers it’s time to apply the theory and one of the biggest tools we use is a digital food scale.
“This allows us to directly weigh out the food we eat in order to be able to track how much we are eating.
“The next tool we need is somewhere to store and keep track of these numbers for us. Luckily the people over at MyFitnessPal.com have created a fantastic app that allows us to do so.
“All we need to do is input the weights of the food we ate and the app does the rest – calculating the calories and macro-nutrient values. The app also allows us to input our calorie goals for the day giving us the ability to know when we are approaching our daily calorie limit.
“And finally we need a bathroom scale. This is to allow us to track our weight as we progress on our diets. So after we have all the tools and knowledge in place all there is left to do is apply it to our eating schedule.”
One woman has revealed how tracking her calories and following the Keto diet helped her to lose weight.
Sharing her before and after transformation to Reddit, poster ‘imakebadpuns_’ explained she had lost five stone in the same number of months.
Writing about how she did it, the poster said: “It took me five months to lose the weight and I’ve been maintaining and focusing on becoming stronger since!
“I lost the weight with keto and moderate exercise and have been maintaining with CICO and weight lifting.”