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Paleo diet follower Megan Fox flaunts weight loss: Her low carb diet and workout

Megan Fox is back at work on the set of the "Teenage Mutant Ninja Turtles" movie just seven weeks after giving birth to her second son.

Megan Fox flaunts post-baby weight loss: Her low-carb Paleo diet and workout
Vittorio Zunino Celotto/Getty Images

Judging by her slim physique, Fox has shed almost all her baby weight in record time, just like she did after her first pregnancy two years ago. Megan was photographed looking gorgeous in dark jeans, black boots and mustard-yellow jacket (above, far right).

In 2012, Fox lost all her baby weight just two months after giving birth to her first son, Noah. Megan gained 23 pounds during her first pregnancy and quickly lost the weight by following the low-carb Paleo diet.

The Paleo diet emphasizes high-quality animal proteins, healthy fats, vegetables and fruits, and excludes gluten, sugar, dairy, legumes, starches, alcohol and processed foods.

The Paleo diet is the most popular diet around today, and has a huge celebrity following, including Tim McGraw, Matthew McConaughey, Jessica Biel, Kellan Lutz, and supermodel Adriana Lima.

Proponents say the low-carb Paleo diet accelerates weight loss, lowers blood pressure, and prevents cancer, diabetes, heart disease, depression, and even Alzheimer's.

Research shows the Paleo diet works especially well for women because it reduces the blood sugar spikes and hormone surges that fuel overeating, mood swings and weight gain, said Esther Blum, author of Cavewomen Don't Get Fat.

Fox's longtime trainer, Harley Pasternak, attributed Megan's rapid post-baby weight loss to regular workouts. "We worked out throughout her entire pregnancy," Harley told People.

Pasternak said Fox was extremely disciplined about diet and exercise while pregnant. "Megan really educated herself big-time so she really understood the safe boundaries of how to exercise and eat well," said Pasternak, whose clients include Halle Berry, Lady Gaga, and Jessica Simpson.

Fox and her husband, actor Brian Austin Green, both follow a healthy diet. "Megan and Brian eat really well," said Pasternak, author of The Body Reset Diet. "They both cook and love using their blender. Megan's favorite is the red smoothie, which is whatever berries are in season, Chai tea, a scoop of protein powder and little bit of almond milk."