UK-based Simon Wang (IG @thehighperformancehuman or @thesamuraiphysique) is on online fitness coach. He is also chronicling and blogging about his diet and will be creating an e-book about it, called The Shredded Samurai.
This before photo is from when Simon was 16 years old. He wanted to get fit and document his starting point. As you can see, over the past 6 years, he has made some dramatic changes in his physique. Simon also credits his healthy lifestyle with a better mood, reduction in stress and a lot more body confidence.
See two more fitness bef-afters via the first two links below, and see more about Simon via the last link to his Instagram profile.