I don't have anything to say on that particular diet. But I can tell you what I did after I had my heart attack about a year and a half ago...
I fast every third day, nothing but fluids, mainly beer and an unhealthy amount of beer. I cut out all processed foods, breads, fried foods. I eat pretty much fresh meat and veggies. I drink all the beer I want and normally have a soda here and there.
I have lost about 45lbs total, dropped 8 pant sizes, I'm ocholesterol and heart meds. Diagnosed with type two diabetes, but I control systems (blurry vision, blood sugar, etc) by what I eat and drink. I do normal pushups, situps, pull ups, try and walk instead of driving as much as possible. Cant run anymore, but if my joints could handle the punishment, I would. That's pretty much it, and I have my abs back... just saying, everybody's body type is different. So obviously do what your doctor tells you...