Vicki lost 5 pounds in a month from only dieting and training her abs, but only 2 pounds were fat, with the rest being muscle loss.

If Luke and Nicole lose muscle on their plan, it will take them longer to get abs because more of the weight lost will not be fat.

If a person relies on cardio alone for fat loss, only 50% to 75% of the weight they lose typically comes from fat, as their body taps into muscle for energy.