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How Jessica Simpson Lost 45kg By Getting Her Eating Habits Right

UPDATED ON Dec 13, 2022

American singer, actress and entrepreneur Jessica Simpson impressed fans when she lost 45kg in 2019. 

At the time, the singer was tight lipped on how she did it, but she and her trained Harley pasternak recently spilled the beans on how she did it, along with the key habits Jessica added to her daily routine to lose the weight. 

Jessica before the weight loss via @jessicasimpson

In April this year, Jessica shared a post on Instagram saying: “I have gained and lost 100lbs (45kg) 3x, so I never thought this moment could or would happen, but I’m finally spring breakin’ wearin’ a BIKINI! Hard work, Determination, Self Love. I enjoyed a good proud cry today.”

via @jessicasimpson

Jessica’s weight has gone up and down over the last several years, mostly after each of her three pregnancies.

However, in 2019 after the birth of her third child, Jessica managed to go from 108kg down to 63kg. 

Here’s how she did it. 

Jessica Followed The Body Reset Diet

Getting her eating habits right played a big role in her weight loss, with Jessica following Pasternak’s Body Reset Diet, which allows for three meals and two snacks each day. Each meal includes protein, fiber, and fat while snacks are a combo of protein and fiber or protein and fat.

The healthy eating plan allows for indulgences, and it’s all about balance and finding a way that doesn’t make sticking to a diet difficult. 

The Body Reset Diet includes three meals featuring protein, fiber and fat, as well as two snacks, such as almonds or edamame, per day. In the early phases of this diet, things are pretty strict, and later on food choices loosen up a bit. 

What Can You Eat on the Body Reset Diet?

The official 15-day Body Reset Diet is split into three five-day phases:

Phase 1: All meals are replaced by smoothies of different colours.

Phase 2: Add in one solid food meal, such as a salad or sandwich.

Phases 3 – 5: This begins the low-calorie, plant-based portion of the diet, designed to be followed for 15 days. Start by consuming two meals and one smoothie “meal.” Alcohol is not allowed, neither is meat. Dairy and eggs are allowed. 

The smoothies are made using four main components, the ingredients of which you can alternate based on your preferences:

  • Liquid base: water, flavoured water, low or nonfat milk, or nondairy milk like almond or soy milk
  • Protein: protein powder, tofu, or fat-free yogurt
  • Healthy fat: avocado, nuts, or seeds
  • High fiber carbs: any fruit — though berries, oranges, apples, and pears are recommended for their fiber content — plus leafy green vegetables like spinach or kale


You eat low calorie snacks twice daily throughout the entire 15-day diet.

These snacks should have around 150 calories, be low in sugar, and contain at least 5 grams of both protein and fiber.

  • edamame
  • plain air-popped popcorn
  • celery with peanut butter
  • whole wheat crackers with fat-free cheese
  • apple slices with deli turkey

How Jessica Trained Her Body & Mind for Weight Loss 

The Body Reset Diet is a program which focuses on exercise and lifestyle habits. Here’s Jessica trained her body and mind for weight loss: 

  • Walking 6,000 steps per day, then gradually working up to 14,000 per day.
  • 3 x 45-minute strength sessions per week with Pasternak and trainer Sydney Liebes.
  • Quality sleep, aiming for seven hours of sleep each night. 
Jessica looking trim on the beach @jessicasimpson

Is the Body Reset Diet Healthy? 

The Body Reset Diet is a 15-day weight loss plan that involves a low calorie meal plan and regular light exercise.

There is a big focus on smoothies, snacks, and small meals. Weight loss is likely, as the diet limits you to 1,200–1,400 calories per day.

However, it is a pretty extreme calorie restriction, and not enough nutrients for some people. 

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Comments (2)

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  1. Lauren

    Thank you for being so honest in your closing paragraph..its so important to point out that it is extremely restrictive, and doesn’t provide adequate nutrients..so much respect!

  2. Julie

    Jessica looks terribly sick. She looks like she got taken away with losing weight and has delved into the dangerous territory of anorexia

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