Characteristics: There's a reason why Scorpio is represented by the exoskeleton-clad scorpion. This intense, disciplined sign is very private, and "has the ability to change a habit overnight," says Biehl.

Cleanse Horoscope: To channel motivation, Scorpios should engage in a competitive, physical activity to experience aggression without hurting anyone. "Downtime afterwards calms and balances the spirit," Biehl adds. Since Scorpio has amazing willpower, it can embark on the strictest of cleanses.

The focus of the Master Cleanse -- which entails drinking a concoction of lemon juice, water, cayenne and maple syrup in place of meals -- engages Scorpio's steely will, which can easily last the required 10 days without deviating from the program's single, strict recipe, insists Biehl. And because Scorpios tend to be introverted, they'll welcome the solitude that comes with the cleanse.

Try: The Master Cleanse

Characteristics: "Part philosopher and part clown, this sign loves laughter, having fun and the freedom to come and go," says Biehl.

Cleanse Horoscope: Being physically grounded will bring Sagittarius into the present, and allow this sign to focus on the challenge ahead. Simple actions like working with its hands or taking a moment to breathe, will counteract Sag's "high-flying" nature and keep this sign somewhat grounded. Sagittarians should choose a cleanse that involves an array of foods to avoid boredom.

"Since variety is essential to keep Sagittarius' interest, this sign is most likely to follow a plan with multiple and diverse meals throughout the day," advises Biehl.

Try: The Food Lover's Cleanse 2016

Characteristics: This practical, reliable sign is able to visualize long-term goals and has the drive to work toward them.

Cleanse Horoscope: Capricorns' determination will serve them well during a longer cleanse (think: a 21- or 30-day challenge). But to be successful, Biehl insists that this sign must lighten up a little first. "Thinking of it as a test-drive, rather than a commitment, helps."