The Whole30 is a popular month-long diet challenge that encourages one to cut down on the intake of refined and processed foods, alcohol, sugar, additives, legumes, dairy and grains to accelerate your weight loss journey and help you shed up to 20 pounds in a month! However, such crash diets may take a toll on your health in the long run and may not provide sustainable results. It is advisable to consult your doctor and a qualified nutritionist before trying it.