Holy cow. Outstanding.
I am by no means a 300 pounder, but I did once lose 50 Lbs in about 8 weeks. It was a lot of work and I was highly motivated. People said that I had made myself appear gaunt.
I was hardly that, but it was a big change. I went from about 250 lbs down to 200 from the end of June to the beginning of September that year.
I can certainly appreciate what this fellow did. Amazing.
Been there done that, unfortunatly more than once.
And I *was* a 305 pounder (and am again). I took about twice as long, but it's the last 25 or 30 pounds that are the hardest. I was already a commissioned officer in the Air Force Reserve, but inactive. I wanted to go active again during the Reagan administration. I made it, with about 2 lbs to spare, not knowing I'd shrunk a 1/4 inch which lowered my maximu allowable weight.
OTOH, these days, the Army will hire Omar the Tent Maker to make ACU uniforms for reactivated "early retirees", who retired 10 years ago during 'toon time, if they need their skill set badly enough (the one I know about is a computer/IT specialist, and is now sitting in tent full of computers somewhere in Iraq).
We had a contest at work last winter. People put in 25 dollars and the first to lose 25 pounds would win the cash. I lost 25 pounds in 23 days and won 300 bucks.