I'll admit I skimmed through his blog, so I could be missing his magic ingredient. But I see he isn't fasting and he is introducing? light cardio? 20kg in 60 d

I'll admit I skimmed through his blog, so I could be missing his magic ingredient. But I see he isn't fasting and he is introducing? light cardio? 20kg in 60 days, what is that, 1kg every 3 days. Assuming fat loss primarily, 1kg = ~7000kcal. 7000/3 = 2333kcal a day deficit. Assuming a fairly sedentary behaviour, but ignoring his excess weights effect on his metabolism. He is going to be a few hundred calories away from pure starvation. 500kcal a day max is what he could be eating to sustain that sort of progression. And this is assuming a decent metabolism and a little activity. You can't sustain this, and introducing exercise of sufficient intensity (I burn ~3200kcal a day, so about my level) to maintain that deficit while eating say 1000kcal a day, is just ridiculous. You'll be burning through muscle tissue like its candy. This is not a good idea, and for so so many reasons. All you'll end up with is a bag of skin and bones.