Did you call it intermittent fasting? I have not heard such an activities before but reading from your explanation I think is a good activities someone can use to lose weight. But also we should also consider that there are some people that has health issue that their body need food for example people with ulcer. I can use my self as an example, though other people can do it, I don't think I can be able to do it especially with the heavy work am doing every day. I can imagine myself with a glass of tea and then am about to carry 1 bag of rice. So in my opinion it depends, make sure you understand your body before engaging in this intermittent fasting. My opinion though, thank you for sharing with us