one day a week fasting

there are a bunch of fasting diets, from intermittent fasting to fasting one day a week. When fasting, it's important not to do it for more than 24 hours (sleeping time counts) and it's important not to just eat everything back when you start eating again.

It can work, if it's too hard for you to reduce your daily calories. But a lot of people would find it pretty hard to do and as a result would slip and make it worse. I would say if you truly think you can do it, you might give it a try, but I personally know I wouldn't be able to do it.