Fastest way to lose weight?

My friend and I are having a competition to see who can lose the most weight in 4 weeks. We have done this before and each lost 5 pounds per week. My diet consisted of salad and water, only. This time I have had some ideas for different diets. I heard you could live on one naked juice per day, so that was an option. My second idea was maybe one naked juice a day and salad. I was also wondering if there was some other suppliment besides naked juice that I could take daily. I know some of you are going to give me the "starvation mode" argument, but save it because it has been disproven and I've experienced firsthand that it is not true. So what do you guys think is the best, fastest way to lose weight? Thanks in advance for your responses.