Fitness Facts for Your Reboot

By: Stacy Kennedy, MPH, RD, CSO, LDN; Reboot Nutritionist

The question often comes up when someone is about to start a Reboot: should I exercise? Well we all know that being active is important for good health but there are many factors that can influence how active you are while you’re on a Reboot. Some people feel like they can exercise more, while others prefer to take it easy. So I’m going to tackle these questions, so you can know with confidence whether or not you should lace up your running shoes.


Here are the most common questions I receive:

  • Should I exercise during my Reboot?
  • What types of exercises are best during my Reboot?
  • How hard and how often should I work out while Rebooting?
  • I’m already an avid exerciser and want to stay active during my Reboot, how can I do that healthfully?
  • Does juicing burn calories?
  • What are the benefits of exercise?

First, let’s quickly review some benefits of exercise and physical activity:

  • Stress reduction
  • Mood elevation
  • Weight loss
  • Shifting body composition (more muscle, less fat)
  • Less aches and pains
  • Bowel regularity/alleviate constipation
  • Improved sleep
  • Strong bones
  • Heart disease, diabetes, cancer and other chronic disease prevention and promotion of survivorship

Next, let’s take a moment to understand physical activity. Physical activity can be different from exercise. Physical activity is simply movement that can enhance health. Exercise is physical activity that is structured and defined like: running 5 miles, jogging for 30 minutes, swimming laps, cycling for 50 miles, taking a yoga or zumba class, lifting weights or playing soccer with a team. Walking can be an exercise or a physical activity that gets you to and from work.

Exercise can be important for health and weight loss just like physical activity, but the research shows that just moving and being active matters most. In fact, studies have found that women with breast cancer who walk at a moderate pace for 150 minutes a week (about 30 minutes 5 days a week) have a 40-50% lower risk of their cancer coming back compared to women who engage in little activity. That’s better than most medications can claim!

Want to hear the best news? You don’t even need to be active all at once. If you choose to walk 30 minutes a day, doing 3, 10 minute walks is just as effective as doing 30 all at once. This flexibility is important to consider during your Reboot for a number of reasons including time and energy level.

Shopping more often for your produce and juicing requires planning and can be time consuming. If you have a busy schedule and think that getting to the gym for an hour most days of the week isn’t practical, rest assured that getting up and walking around your office, home or neighborhood for as little as 15 minutes twice a day will help give you healthy results.

We know that over-training or over-exercising, as well as being sedentary, can be immunosuppressive or weaken our immune defenses, while engaging in moderate exercise or activity can be immune supportive or enhancing. During your Reboot it is very important to avoid what your body would consider over-training because one key purpose of the Reboot is to help boost our immune defenses and doing too much exercise will interfere with this important benefit. Figuring out what is “too much” exercise and what is the “right amount” may sound tricky. It’s actually a very subjective thing so the best way to ensure you are hitting that sweet spot of being active without overdoing it is to check in with yourself. For example on a scale of 1-10 aim for a 5-7 if 1 is easy and 10 is hard. During moderate exercise your heart rate and breathing rate will increase and you may sweat, but you can still carry on a conversation.

Which activities are best during your Reboot?
The good news is that most forms of physical activity can fit because you can adjust the duration (how long) you exercise and the intensity based on how you’re feeling in the moment.
Here’s a short list of ideas:

  • Walking
  • Jogging
  • Cycling
  • Swimming
  • Group exercise classes
  • Tai Chi, Qi Gong, yoga
  • Wii, Xbox or other interactive video exercise
  • On Demand or other TV based fitness programs. Many are free and short durations.
  • Simply adding more movement to your day
  • Park your car farther away
  • Get off the bus or train one stop early
  • Take the stairs (even 1 or 2 flights)
  • Get up from your desk for a quick walk break
  • Take an extra lap around the grocery store (the produce section of course!)
  • Play with your kids or dog at the park
  • Walk your dog
  • Wear a pedometer
  • Turn on music and move or dance while you’re prepping your veggies and juicing

Here’s what you need to do in order to make your workouts effective and most importantly safe during your Reboot:

  • Drink extra water all day long
  • Drink extra juice
  • Drink a juice you digest well or eat a raw veggie/fruit about an hour before you workout. This juice can be a snack size of 8-12 oz (250-360 mL) instead of 16-20 oz (480-600 mL).
  • Slow your pace down as needed during your workout
  • Talk with your doctor before starting an exercise regimen especially if you are not accustomed to exercise and are doing a juice only Reboot

What if you are training for an athletic event like a marathon, triathlon or you are already doing a lot of exercise and want to continue during your Reboot?
Some Rebooters have chosen to just juice while training for a marathon and report feeling amazing with loads of energy! But it’s important to plan ahead and be wise about your choices to ensure a safe and effective regimen.

Here are some tips for those wishing to continue their athletics during their Reboot: 

  • Drink juice throughout the day. Aim for 4-6 per day at 16-20 oz (480-600 mL) each. For training, I’d suggest setting up a juicing schedule where you include at least one snack size juice between meals to meet your energy needs while exercising that is 8-12 oz (250-360 mL). Continue to have the recommended minimum of 4 (16-20 oz/500-600mL) juices per day.
  • Include at least 2 green juices a day but also try to get a rainbow of colors for the full spectrum of micronutrients that are beneficial for health and wellness.
  • Add in additional coconut water (unflavored or fresh) for electrolytes to support your training
  • Drink at least 64 oz (~2L) of water daily in addition to juices – you may even need more depending on your height/weight and training schedule.
  • Choose electrolyte and antioxidant rich juices including Ciao Bella, Cantaloupe Carrot Cocktail, Lucky Leprechaun, New Beginnings, Heartbreak Hill, and Workout to the Beet
  • For after your workout choose a higher protein juice like Joe’s Mean Green
  • Add extra protein to your juices throughout the day as needed (our Reboot with Joe Protein Powder was designed specifically for juice!)

Is juicing a workout?
Just about any activity can help to burn more calories and manage weight. Shopping for produce, preparing your veggies for juicing and clean up require work which mans that you are helping to expend energy or burn calories with juicing.

Here’s a rough estimate based on someone who weights 150 pounds/70 kg:

  • Shopping for produce while carrying your fruits and veggies around the store
  • 20 minutes = 54 calories
  • Washing and cutting your vegetables and juicing
  • 10 minutes = 40 calories
  • Cleaning up after juicing; 15 minutes = 44 calories
  • Net calories burned — 138 (.58 kJ), not bad!

Have fun being active during your Reboot and don’t forget to check out our Reboot Movement Method for Reboot-friendly workouts!

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Stacy Kennedy, MPH, RD, CSO, LDN; Reboot Nutritionist

Stacy is a Board Certified Specialist in Oncology Nutrition and an Integrative Nutritionist. She consults for various companies, focusing on health, wellness and innovative strategies to help increase individual’s fruit and vegetable intake. Stacy is an American College of Sports Medicine Certified Health Fitness Specialist; she holds a BS degree in Dietetics from Indiana University, completed her dietetic internship at Massachusetts General Hospital, and earned a Masters in Public Health from the University of North Carolina at Chapel Hill. She is a Senior Clinical Nutritionist at the Dana Farber Cancer Institute/Brigham & Women’s Hospital, Harvard Medical School teaching affiliates, in Boston, MA, with more than 20 years of experience. Stacy created and now serves as project manager and lead writer for nutrition services content on the Dana Farber website and the affiliated, nationally recognized nutrition app. Stacy is regularly featured on TV, radio, print and social media on behalf of Dana Farber and other organizations. Together with her husband, Dr. Russell Kennedy PsyD, they have a private practice, Wellness Guides, LLC. Stacy is an adjunct professor in Wellness and Health Coaching at William James College, currently teaching a graduate course in Health Coaching. Stacy is featured in the award winning documentary films, “Fat, Sick & Nearly Dead” and “Fat, Sick & Nearly Dead 2,” and serves on the Reboot with Joe Medical Advisory Board. Stacy lives in Wellesley with her husband, two sons and three dogs. She enjoys cooking, yoga, hiking and spending time with friends and family. Stacy is also one of the nutritionists who runs our Guided Reboot programs.

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