Lose fat with high-intensity interval training (HIIT). If you're trying to lose weight fast, HIIT training can super-charge your metabolism for upwards of 24 hours after exercising. This means your body will continue burning calories long after you've ended your workout. HIIT burns more calories in less time than steady-state cardio. In one study, researchers looked at two groups, one running for 30 to 60 minutes three times per week, the other doing four to six 30-second treadmill sprints, resting for four to six minutes between each sprint. After six weeks, it was found that the group doing HIIT training lost more weight.
I am on day four and I am very discouraged. I don't feel as if I am losing any weight at all. I encourage you to complete the seven days. Don't be too disappointed if you don't lose all ten pounds. Everybody and metabolism is different. Do be careful, however, to follow the diet exactly. Don't eat less food than is recommended in your effort to lose weight as that will throw off the diet's chemistry.