#9: Christina Aguilera: The Color Diet
The Voice coach Christina Aguilera likes to take a colorful approach to dieting by embarking on the 7-Day Color Diet. Each day allows the star to only eat foods from one hue, starting with white, then followed by red, green, orange, purple, and yellow.
If you ask us, anyone can lose weight if they’re barely eating. After all, who can name more than five foods that are purple?