Dirty Little Secret to Jumpstart your metabolism

Dirty Little Secret to Jumpstart your metabolism

After six months of CrossFit, five days a week, my transformation wasn’t as dramatic or amazing as I had hoped. I didn’t get insanely ripped as planned – I still had extra weight around my stomach that I was hoping to ditch. So I was on a quest to find a way to keep up with the workouts I loved without having to add in extra cardio or drastically changing the foods I liked to eat.

I’d heard of intermittent fasting because my father had success doing the 5:2 plan: you eat normally five days a week, then eat 500 calories a day twice a week. But there’s no way I would be able to eat so little and be able to exercise, work full-time, and take care of my family.

What I Did

I decided to try a version of the 16/8 plan, where you fast for 16 hours and eat for eight. This seemed to fit my lifestyle better. I’d stop eating around 7 or 8 at night, then wouldn’t eat again until 11 a.m. or noon the next day. It basically meant that I’d skip breakfast, then eat three times the rest of the day, consuming roughly the same amount of calories I would if I’d been eating all day long.

“It [intermittent fasting] gets your body out of ‘storage mode’ and mobilises fat stores for energy,” said certified dietitian Leslie Langevin, MS, RD, CD, of Whole Health Nutrition. This means that without having a constant food source, your body will dip into the fat it already has stored.

How I Dealt With Hunger

I’m not gonna lie. The first two weeks were rough. Especially on days that I woke up at 4:45 a.m. to do CrossFit at 5:45 for an hour. The hardest part was coming home from class at 7:00 a.m. and having to prepare breakfast for my kids. The temptation of grabbing a banana or polishing off their crusts was almost unbearable. My husband was very supportive and took over breakfast duties so I wouldn’t have to smell cinnamon toast. I’d just down a huge glass of water and keep myself busy getting them ready for school. Around 9 or 10 a.m., I’d make a cup of chai tea with a splash of cashew milk. Many intermittent fasters recommend caffeine to suppress hunger, usually black coffee. Also, any beverage under 50 calories still counts as fasting, and sipping on that totally helped, as well as plain water throughout the morning.

Those first two weeks, I found myself looking at the clock every 20 minutes, hoping it was noon already. I didn’t really get any headaches as I thought I would, but I did find myself a little cranky – working alone from home was definitely a plus. But every day got a little easier. By the fourth week, I usually didn’t start feeling hungry until 30 minutes before I was supposed to start eating.

5 Types of Intermittent Fasting (and the 1 a Dietitian Recommends)

One thing that’s great about this 16/8 plan is that eating was more enjoyable. I was able to eat larger meals and ate anything I wanted to. Although my diet is already pretty healthy with no meat or dairy and hardly any refined sugars, I loved the freedom of being able to sit down to a huge lunch or dinner without having to make sure it was under a certain amount of calories. Knowing this made it easier to get through that fasting window, because I knew by noon I’d be sitting down to a plate full of yumminess.

What I Ate

Once I entered my feeding window, I made sure not to pig out. This wasn’t too hard because I noticed that I’d feel fuller sooner than I did before I had starting intermittent fasting. Drinking water with each meal also helped.

12:00 p.m. (first meal): A big salad with beans and a slice of toast, or veggie lentil soup with toast, or avocado toast with tomatoes, salted sunflower seeds, and marinated tofu (#ilovetoast). I always finished with a small bowl of raspberries or strawberries just to satiate my sweet tooth.

2:30/3 p.m. (second meal/snack): I’d have a banana with crunchy almond butter, an apple with a big handful of raw almonds, a Cashew Cookie Larabar, or a plain dairy-free yoghurt topped with some chopped fruit and nuts.

Image Source: POPSUGAR Photography / Jenny Sugar

5:30/6 p.m. (third meal): A big kale salad with roasted butternut squash and beans, or a veggie burger patty with roasted sweet potato and steamed broccoli, or some kind of tofu veggie stir fry with rice. Oh, and pasta. I had pasta at least once a week, usually this avocado pasta recipe with meatless meatballs. I definitely did not give up carbs.

6:30/7:30 p.m.: After dinner, I usually went for some fruit, trail mix, or dates, but that third week I was craving sugar and indulged in some vegan cashew milk ice cream three nights in a row. Although so very delicious, I definitely didn’t feel great after eating it, which reminded me why I had given up sugar. So that last week, I was back on track, focusing on eating food for fuel.

Did I Lose Weight?

Yes! I lost about two pounds, which for me was HUGE, since I wasn’t seeing the scale budge otherwise. I was still doing CrossFit, so I know I was gaining muscle weight, but still the scale showed a decrease. I was amazed. The biggest thing, and I noticed this after the first week, was when I looked in the mirror, I could see more definition in my abs and upper back. That visual progress was what kept me going when I wanted to throw the towel in and drown myself in a bowl of oatmeal.


I have a dirty little diet secret. I used to be ashamed to talk about it, until recently. Conventional diet beliefs denounce this method and here I am, an accredited health and fitness expert, trainer and health coach practicing something I would never preach (until now). The secret I’ve been hiding is intermittent fasting, an eating pattern that flies in the face of accepted norms.

Why come out now? Because in recent years books espousing various versions of the “diet” make it an emerging trend. Although evangelists have proclaimed miraculous results, The Canadian Medical Association Journal concurs that there is a large body of research supporting the health benefits of fasting and, “the results have been promising.”

When I started doing it, there was no name for it. It was something my lifestyle dictated when I started training at 6 a.m. most days of the week and 7 a.m. on weekends. I was not about to start getting up earlier than 5 to make some oatmeal. Coffee was all I could manage. I also noticed that on days when I did have breakfast, it would spark my appetite and I’d wind up eating more over the course of the day. It’s commonly known that breakfast eaters tend to be healthier and weigh less than their meal skipping counterparts, so I was embarrassed to tell people I didn’t eat breakfast and that I’d workout on a stomach containing only caffeine and some supplement infused water. I just felt better working out in a fasted state then, eating a big meal after. Turns out, my instincts, according to intermittent fasting proponents, may be spot on. Who knew?

Intermittent fasting is an eating pattern where you increase the window of time in a day that you fast (water, tea and coffee — not mocha lattes — are fine) and decrease the number of hours you can eat. For example, fasting from dinner until lunch the next day. It is the opposite of the highly touted “frequent, small meal” plan which always reminds me of Nancy Reagan. If you’re old enough to remember, that’s the program she lauded for keeping her trim and weighing about as much as a Border Collie. When you think about our ancestors, they ate very irregularly and didn’t have Tupperware to store their five or six meals for the day. Even today, food insecurity is a problem in both the U.S. and the world. It’s logical to assume our bodies were designed to not need food every few hours.

Human clinical trails on IF are still in their infancy. Most of the relevant studies have been done on lab animals. But that hasn’t stopped the architects and advocates of the most popular IF diets from extolling its miracles. Some evidence suggests that, when done correctly, IF can:

    • Extend longevity
    • Regulate blood glucose and insulin
    • Burn fat and maintain or gain muscle mass (following a proper exercise program and post workout meal)
    • Lower blood pressure


    • blood lipids (triglycerides and total cholesterol), body weight and body fat
    • inflammation markers, oxidative stress and cancer risks


    • cellular turnover and repair
    • growth hormone release
    • metabolic rate


  • effectiveness of chemotherapy
  • cardiovascular and brain functions

No wonder health and fitness fanatics along with those in search of a fantastic physique are giving it a go. But which version? When I saw Dr. John Berardi, chief science officer of Precision Nutrition, was giving a lecture on intermittent fasting at the IDEA World Conference recently, I asked if we could meet to discuss his ebook, “Experiments With Intermittent Fasting.” In this book, Dr. Berardi tries out five different methods on himself, chronicling his experience. Here’s a primer on the different techniques he tested.

1.One full-day fast per week similar to Brad Pilon’s book, “Eat Stop Eat.”

2. Two full-day fasts per weeks similar to Dr. Michael Mosley’s “5:2 Fast Diet,” which he did a documentary about on the BBC. This plan is not quite as radical as “The Every Other Day Diet” which is fasting every other day, but eating as much as you want on alternating days. On both plans, you are allowed to eat 500 or 600 calories on the fasting days.

3. Daily 16-hour fast and 8-hour feed as popularized by Martin Berkhan’s “Leangains”program and praised by Hugh Jackman.

4. Daily 16-hour fast / 8-hour feed with one full day fast.

5. Daily 16-hour fast / 8-hour feed with two days of 20 hour-fast / 4-hour feed. The 20 / 4 plan is similar to Ori Hofmeklr’s “Warrior Diet.”

All protocols worked to get him to his goal of losing 20 pounds and shredding up although there were some ups and downs. His key takeaways:

A. Trial fasting is a great way to practice managing hunger. Anyone trying to lose weight and stay fit knows they’re no fun to be around when they’re hangry.

B. The IF experiments (bigger meals, less frequently) worked well for losing fat and maintaining or gaining muscle. But, it isn’t objectively better for losing fat than more conventional diets (smaller meals, more frequently).

C. More regular fasting made it easier to maintain a lower body weight and body fat percentage vs. conventional diets. But IF isn’t easy.

D. IF can work but it’s not for everyone, and is just one of many effective approaches, for improving health, performance, and body composition.

All successful nutrition plans share a few common traits such as:

  • Controlling calories.
  • Focusing on high quality, fresh, unprocessed, nutrient dense food.
  • Stressing regular exercise.

What all IF protocols share is expanding the window of time you go without food (i.e., 16, 24 or 36 hours) and shrinking the amount of time you can eat (i.e., 4, 8, or 12 hours). Since maintaining muscle mass is a key attribute, fasting for longer than 36 hours is not advised. Fasting for longer than normal and working out in a fasted state forces the body to burn fat once it runs out of glycogen stores. But going too long without food will backfire and cause the body to start breaking down muscle. Also, there’s a good chance you won’t get enough nutrients, so proper supplementation may be needed.

Of course there are certain people who should not try IF. Pregnant women, people with eating disorders, diabetes, hypoglycemia, etc. Discuss it with your doctor if you have any health conditions or concerns. Hormones will be affected. And, you also have to consider whether it will fit comfortably into your lifestyle — it does take some time to get used to. As for me, someone who’s been doing it by accident for many years, because I’m too lazy to prepare a bunch of small meals or wake up extra early to make breakfast, it works well. I’ve also noticed that after 16 hours of fasting, food tastes a lot better!