Bulletproof Fasting: The Rapid Fat Loss Protocol | The Bulletproof Executive

Anyone here tried this? Any thoughts? I am a female with about 20 lbs to lose. I have been primal for a year and a half and lost 20 lbs. in the first 8 months and not much since. I am looking for something to kickstart it. Just wondering if this is too extreme or if I should give it a shot? Would love to know if anyone else here has tried it. Input greatly appreciated!