Reader's Digest Association's 21-Day Tummy meal plan and Martha's Vineyard Diet Detox are nutritional programs that promise weight loss in 3 weeks. In combination with proper nutrition, the 21-day fitness regimen at Women's Health also guarantees a reduction in weight by as much as 15 pounds for the average fit woman, notes Women's Health.
The 21-Day Tummy plan is divided into three phases: the flatten stage beginning from days 1 to 5, the soothe and shrink stage starting from day 6 until day 15 and the balance stage constituting days 16 to 21. The first phase involves minimizing calorie intake by substituting one meal a day with a Belly Soother smoothie. This initial part emphasizes eating very low-carbohydrate and grain-free foods. Test panelists of this meal plan shed typically shed 5 and 1/2 pounds after the flatten phase, claims Reader's Digest.
The second phase of the 21-Day Tummy diet program recommends stacking up on foods rich in magnesium and mono-unsaturated fatty acids, or MUFAs. This stage aims to boost the metabolism and foster energy production by encouraging the consumption of fresh fruits and vegetables, seeds, nuts, MUFA-rich oils and fiber-rich and carb-light grains, such as oat bran and quinoa.
The last phase focuses on eating and maintaining a balanced meal that comprises 30 percent protein, 40 percent carbohydrates and 30 percent fat, with desserts and sweets allowed every other day. At the end of this diet plan, practitioners do not only experience weight loss but also enjoy improved digestion and suffer less from inflammatory conditions.
The Martha's Vineyard Diet Detox claims to effectively help reduce 21 pounds in 21 days, although this weight loss is only short-term, states WebMD. This restrictive program will also likely lead to muscle loss, with headaches and fatigue as possible side effects.