With the exception of the running, this guy’s story is almost identical to the way I lost my excess weight. The primary theme is self-experimentation. He calls his diet a high-protein one, but I’d bet if he were to log his food intake, it was actually a high-fat diet.
Regardless, check it out – it’s a good read:
https://lifehacker.com/how-i-experimented-my-way-to-losing-100-pounds-1107324670