Would This Be Unhealthy ?!
When ever my mum goes on diets, she goes like really hardcore, lol, and she'll lose 10-15 pounds in a week, its crazy, she's lost like 75 pounds in the past two months.(yay!). Everyone's body works differently, just stick to a healthy diet, and work out daily. You'll be dropping weight before you know it. :)-e
I think it would be too much weight loss in one week.
Normally you should aim for 2lb per week, that is a stable weight loss.
With fast weight loss you are more likely to gain it back very quickly.
id be exhausted doing something like that.