This sounds pretty similar to some of the things Dr. Valter Longo has been mentioning in his book the longevity diet where a part of it are also occasional 5 da

This sounds pretty similar to some of the things Dr. Valter Longo has been mentioning in his book the longevity diet where a part of it are also occasional 5 day fasts with 800 calories, that (supposedly) have great benefits. Great to see this being tested with the general public.