Chiropractic, Health, Diet, Research Dan Mutter Chiropractic, Health, Diet, Research Dan Mutter

Heart Rate Variability

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Each February, I offer current and prospective practice members an opportunity to measure how well their autonomic nervous system is currently adapting to stress (Click here to request more info or to schedule an HRV study). I use Heart Rate Variability (HRV) as an assessment tool to determine what their resting baseline state is. This allows us to see how they index sympathetic (fight/flight, defensive physiology) with parasympathetic (rest/digest, recuperative physiology) tone. It also allows us to get a read on how resilient their physiology is, which is a measure of the ability to withstand and recover from difficult conditions. This information is important both clinically, as it helps me to better understand and guide care, and personally, as it provides a quantitive measure of an important physiological marker.

HRV looks at the interval between successive heart beats to determine how much variation is being expressed. Like any other biometric, too much or too little variation indicates the body is working harder since it has moved outside the range of baseline normal to highly adaptive. There are several devices that offer HRV tracking as wearable tech, which are used by folks to determine when to train (or rest). Most recently, information from these wearables has been analyzed to see if HRV changes can predict immune system outcomes related to the pandemic. By contrast, the instrument and system I use in my office employs a 3 minute resting capture that collects heart rate data as well as skin temperature and galvanic skin response. These additional measurements help build a more complete assessment of autonomic regulation and ensure accuracy of collection. To be clear - the HRV used in my chiropractic office is an assessment of autonomic nervous system function used to teach people about their bodies and guide practice members in their health and wellness journey. It is not used to diagnose or treat viral or other pathogenic diseases.


“If the first two decades of the 21st century have taught us anything, it is that uncertainty is chronic, instability is permanent, disruption is common, and we can neither predict nor govern events. There will be no new normal. There will only be a continuous series of not normal episodes defying prediction and unforeseen by most of us until they happen.” Jim Collins

The past year has been a tremendously trying time and has highlighted and underscored the need to reframe how we relate to uncertainty. When I consider the above quote, the word that comes to mind for me is adaptability. Adaptability is defined as the quality of being able to adjust to new conditions. If we agree with Jim Collins (and I do), then the ask here is clear: how do we learn to accept the nature of reality as being in constant flux while we learn to improve our ability to adjust to new and changing conditions?

Once you have some HRV data to work with, here are 6 ways that you can support your body and your nervous system, which have been shown to improve HRV:

  1. Sleep - The body heals, the brain detoxes, mind rests. This is the primary way you communicate self-respect to your body and your spirit. Physiologically speaking, 8 hours is the minimum to allow your systems to refresh during a 24 hour period. The book and podcasts featuring Matthew Walker are great resources for more information.

  2. Water - The many fluid tasks your body performs to cultivate health require adequate hydration. From blood pressure to lymphatic flow, liver, kidney, and skin detoxification to general digestion, we all need more water than we typically consume. The 2 guidelines that help me are 1) to have a designated bottle (or bottles) that I know is my minimum target to finish by day’s end and 2) to use either the dryness of my lips and/or the color of my urine to gauge hydration (clear to straw color is a good indicator).

  3. Movement - The natural state of the human body is to be in motion. The casts we lock ourselves into in the form of desk chairs, car seats, couches, and the like are antithetical to providing the quantity and quality of movement our joints, muscles, fascia, circulation, and neurology need to be healthy. See my earlier post about the importance of a Movement Practice here.

  4. Reduce Alcohol - Simply stated, alcohol depresses the function of the central nervous system. As with ANY chemical introduced into the body, set, setting, and dose determine experience and the relative benefit or detriment of consumption. Although it is easy (and likely true) to say that blanket abstinence is the best policy for physiological health, this misses the nuance of being able to intentionally and responsibly enjoy a beverage either for its craft or on the occasion to celebrate company. To wit, the measured benefit of alcohol seems to max out at the equivalent of 1 drink per day.

  5. Nutrition - The quantity, quality, and relationship we have to what we consume directly impacts our health. A diet that is based on whole foods, organic products, a (colorful) diversity of offerings, and is locally sourced when possible will facilitate nutritional health. Other helpful notes are to try to eat at regular times each day, minimize refined sugar, and use high quality oils when cooking/preparing food. See my previous post about Consuming Consciously here.

  6. Chiropractic - Last but certainly not least, chiropractic care has been shown to positively influence HRV. By working directly with the tone and tension of the nervous system, chiropractic adjustments help the body to up-regulate parasympathetic activity, move more effectively, and clear the central channel of the spine, which prompts the innate intelligence of the body to reboot and reorganize the patterns of stress held in the system. For more information see here, here, and here.

We use HRV as part of our objective measurements to track the progress of our practice members who receive care at Mutter Chiropractic. It is a valuable tool and a great way to open a conversation about ways to positively influence health, wellness, and adaptability.


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Diet, Health, Philosophy, Wellness Dan Mutter Diet, Health, Philosophy, Wellness Dan Mutter

What Gets Baked In?

Since the beginning of this year, I have begun some kitchen experiments - what some might refer to as “baking”. Usually on a weekend, I will raid the pantry and/or fridge to see what ingredients are available to transform from shelf powder to home-baked pastry. There are recipes, general guidelines, and traditional wisdom passed down from current and bygone bakers, but reading about scones and digging into the trenches of butter and flour are two very different experiences.

Baking is a simple and elegant example of emergence. An emergent property is one that an entity displays in its wholeness, that is not present in any of the individual parts that comprise it. For example, butter and flour and sugar by themselves have certain textures and tastes, but none of them can be said to be a biscuit. It is not until they combine with thoughtful ratio and exposure to fire that the alchemy of emergence brings about a new form - one that is more complex than the sum of the parts.

Baking has also reiterated for me how profound a subtle gesture can be. In the kitchen, like in life, things rarely proceed the way the recipe dictates. The ability to adapt to a changing environment is important. Sometimes, a “minor” substitution can yield a major shift in the way the experience unfolds.

Take milk, for instance. For my recent batch of biscuits, I realized there was no milk in the house well after the process was underway. Instead, I substituted Bulgarian yogurt for milk because that was what was available. The baking continued and eventually the golden treats were drawn from the oven. The biscuits were slightly chewier than usual. Not long after the first bite, the eminent critic weighed in. He proceeded to observe that this batch was “not as good. Not like normal.” In other words, these biscuits did not meet an arbitrary and preconceived notion of perfection.

But what about how they browned more evenly and the outer crust was richer? What about the witness who could take a moment to appreciate that I can spend a Sunday morning baking something (anything!) for the sheer pleasure of it? It gave me a chance to reflect on how much I/we miss in the ceaseless quest to judge and criticize instead of simply seeing what is right in front of us. Simple in its truth, yet sometimes rather challenging in practice. This process does not happen in isolation and I enjoy the good fortune to have a partner who encourages me to see this way, who reminds me when I seem to forget, and who patiently supports my adventures in baking.

Another “minor” substitution I have been experimenting with is reframing the question my mind asks about many of the things it considers. The shift from “what if…” to “what is…” may only reflect a single letter substitution in the ingredient phrase, but it yields a much different and much richer Present when it comes out of the oven.

As we enter the heat and the fire of this summer season, I am curious to ask: what is getting baked in? And how does the art and manner of how we bake impact what emerges?

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Health, Wellness, Diet Dan Mutter Health, Wellness, Diet Dan Mutter

Consuming Consciously

Your diet extends far beyond what you eat at meal time. The nutrition (or lack thereof) you obtain from the food you eat is a combination of quantity, quality, and value. If you don’t eat enough, or if you have too much, you won’t feel great. If you have the “right” portions, but they’re made of junk, that won’t be great either. A third consideration, which I think is as important as quantity and quality, is value. How are you consuming? Are you taking notice of what you’re eating? Are you eating alone or with friends and family? Are you watching TV, trolling the internet, stressing about work? Are you paying attention to not only the food itself, but the experience you create when you eat it?

Consuming food is the most accessible example for the talking about consuming consciously. Your brain and your body consume everything that you expose them to. Activities that you do on the regular become a “diet” for your senses. If you sit a desk all day, make an effort to move. You wouldn’t eat white rice for 75% of your meals, so don’t subject your body and your posture to the cast of a chair for 75% of your time awake. The information you expose your mind to becomes the nutrition (or lack thereof) for what you think, how you think, and how you feel. Listening to Mozart on the ride to work will have a different impact on your mind than listening to talk radio. Reading Rumi or Rilke will provide different nutriment than the news. Having an exciting conversation with someone (in real life) about bike mechanics, coffee, or whatever you find interesting will be more novel, more energy rich, and provide more value than casual observations about the weather.

What we eat, what we listen to, what we read, who we engage with, and what activities we perform - consistently - will serve to mold who we are and what kind of experiences we have. We live in a time when we are overtly and covertly pushed to consume. If we can bring this process to a more conscious level, we give ourselves the opportunity to make a choice to ask: how much, what kind, and is this important to me?

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