In recent years, wearable technology has revolutionized the way we approach health and fitness. From smartwatches to specialized sensors, these devices offer unprecedented insight into our bodies, helping us make informed decisions about our lifestyle choices. Let's explore how some of the most popular wearables are changing the game for exercise, nutrition, and sleep.
Continuous Glucose Monitors (CGMs): Unlocking Metabolic Health
CGMs, once reserved for diabetics, are now gaining popularity among nondiabetics who want to improve their metabolic health. These small sensors, typically worn on the upper arm, provide real-time data on blood sugar or glucose levels. By tracking glucose fluctuations throughout the day, users can:
- Identify which foods cause significant spikes in blood sugar
- Optimize meal timing and composition for better energy levels and blood sugar metrics
- Understand how exercise affects blood sugar levels
I often recommend a two-to-four-week trial with a CGM for my patients who have metabolic disease (e.g., insulin resistance; prediabetes; Metabolic Dysfunction-Associated Steatotic Liver Disease or fatty liver, etc). I can tell them based on population health data what kinds of foods should make their metabolic disease (and blood sugar) worsen, but there can be significant individual variability.
I also think it’s useful for people to see in real time how exercise, sleep, stress, and meal composition impact their blood sugar levels. I even have several patients for whom it’s been a great motivator—they have chosen to keep wearing a CGM after the initial trial because they feel it motivates them to continue to eat well and exercise (because they want to continue to see healthy numbers on their CGM!). This is a manifestation of the scientific phenomenon called the Hawthorne effect—when people modify their behavior in response to their awareness of being studied or observed. For some people, it’s a very effective behavioral modification tool!
Smart Rings: Sleep and Recovery in Focus
Devices like the Oura Ring have brought sophisticated health tracking to a sleek, unobtrusive form. Oura and similar rings monitor sleep patterns and recovery metrics. While they certainly don’t provide the same accuracy as a medical sleep study, they are precise, and one can follow results directionally after making lifestyle changes. Users can benefit from:
- Sleep stage analysis (REM, deep sleep, light sleep)—useful to follow directionally
- Recovery scores based on factors like resting heart rate, body temperature, and heart rate variability
- Activity tracking to balance exertion and rest
By providing actionable insights into sleep quality and readiness for physical activity, smart rings help users optimize their rest and recovery, leading to improved overall well-being and exercise performance. Again, metrics are helpful to follow when someone makes a behavior change, (for example, no alcohol in the evening) and they can see how that behavior impacts sleep quality. Just like with the CGM, I have patients who are motivated to continue their healthy behaviors because they want to see “good” numbers on their sleep trackers.
Heart Rate Monitors: Precision in Training
Specialized heart rate monitors, such as the Morpheus system, take cardiovascular tracking to the next level. These devices offer:
- Accurate heart rate variability (HRV) measurements
- Personalized training recommendations based on recovery status
- Integration with other health data for a comprehensive fitness picture
By using HRV and other metrics, these systems help users avoid overtraining and optimize their workout intensity. This leads to more efficient training sessions and reduced risk of burnout or injury. I personally use the Morpheus system to personalize my “Zone 2” training—I typically shoot for >200 minutes per week of Zone 2 training. Based on population health data, Zone 2 is a heart rate of 130-135 for me, but I use Morpheus to adjust that on every training day—it will increase or decrease that heart rate goal range based on my recovery status.
Smartwatches: The All-in-One Health Companion
Devices like the Apple Watch and Garmin watches have become increasingly sophisticated health tools. They offer a wide range of features including:
- Activity tracking for various exercises
- Heart rate monitoring and EKG capabilities
- Sleep tracking and stress management tools
- Integration with other health apps and devices
Smartwatches excel at providing a holistic view of health, allowing users to track multiple aspects of their wellness in one place. They can motivate users to move more, stand regularly, and even practice mindfulness. I have a D1 athlete whom I see, and her Garmin’s recovery status is very accurate in predicting when she is getting sick (often before she feels ill). It is helpful to her to modify her daily routine based on this data.
The Impact on Health and Wellness
The combined power of these wearables is transforming how we approach health:
Exercise Goals: With precise data on heart rate, recovery status, and activity levels, users can tailor their workouts for maximum effectiveness. Smartwatches and heart rate monitors help ensure that each session is challenging enough without risking overexertion.
Nutrition and Food Choices: CGMs have perhaps the most significant impact here. By showing the immediate effects of different foods on blood sugar, they empower users to make informed dietary decisions. This real-time feedback can lead to improved long-term health outcomes, including eliminating metabolic disease.
Sleep Habits: Devices like the Oura Ring and smartwatches provide detailed sleep analysis, helping users understand their sleep patterns and make adjustments for better rest. This improved sleep quality can have cascading benefits on energy, mood, and overall health.
While all these devices offer powerful insights, it's important to remember that they are tools, not replacements for medical advice. The data they provide should be used to complement, not substitute, professional healthcare guidance.
As wearable technology continues to evolve, we can expect even more sophisticated health tracking capabilities. By leveraging these tools, we can take a more active role in our health, making data-driven decisions that can lead to improved fitness, better nutrition, and more restorative sleep. Remember, if you can measure it, you CAN improve it!
Interested in learning more? Come see me for a meet ‘n greet! www.renewalhealth.us
1. Stein JH, Rothberg AE, Christy L, et al. Continuous Glucose Monitoring With Low-Carbohydrate Diet Coaching in Adults With Prediabetes: Mixed Methods Pilot and Feasibility Study. JMIR Diabetes. 2020;5(4):e21551
2. Yost O, DeJonckheere M, Stonebraker S, Ling G, Buis L, Pop-Busui R, Kim N, Mizokami-Stout K, Richardson C. Continuous Glucose Monitoring With Low-Carbohydrate Diet Coaching in Adults With Prediabetes: Mixed Methods Pilot Study. JMIR Diabetes. 2020 Dec 16;5(4):e21551. doi: 10.2196/21551. PMID: 33325831; PMCID: PMC7773517.
3. Griauzde DH, Ling G, Wray D, DeJonckheere M, Mizokami Stout K, Saslow LR, Fenske J, Serlin D, Stonebraker S, Nisha T, Barry C, Pop-Busui R, Sen A, Richardson CR. Continuous Glucose Monitoring With Low-Carbohydrate Nutritional Coaching to Improve Type 2 Diabetes Control: Randomized Quality Improvement Program. J Med Internet Res. 2022 Feb 2;24(2):e31184. doi: 10.2196/31184. PMID: 35107429; PMCID: PMC8851329.
4. Jiang W, Wang Y, Huang Y, et al. Two-week continuous glucose monitoring-derived metrics and hepatic steatosis: a population-based cross-sectional study. Cardiovasc Diabetol. 2024;23(1):188.
5. Asgari Mehrabadi M, Azimi I, Sarhaddi F, et al. Sleep Tracking of a Commercially Available Smart Ring and Smartwatch Against Medical-Grade Actigraphy in Everyday Settings: Instrument Validation Study. JMIR Mhealth Uhealth. 2020;8(10):e20465.
6. Robbins R, Vallat R, Saner NJ, et al. Accuracy of Three Commercial Wearable Devices for Sleep Staging: Validation against Polysomnography. Sensors. 2024;24(20):5090.
7. Shcherbina A, Mattsson CM, Waggott D, Salisbury H, Christle JW, Hastie T, Wheeler MT, Ashley EA. Accuracy in Wrist-Worn, Sensor-Based Measurements of Heart Rate and Energy Expenditure in a Diverse Cohort. J Pers Med. 2017 May 24;7(2):3. doi: 10.3390/jpm7020003. PMID: 28538708; PMCID: PMC5491979.
8. Brockmann, L., Hunt, K.J. Heart rate variability changes with respect to time and exercise intensity during heart-rate-controlled steady-state treadmill running. Sci Rep 13, 8515 (2023). https://doi.org/10.1038/s41598-023-35717-0
9. Higgins, M. F., et al. "Effects of aerobic training intensity on resting, exercise and recovery heart rate variability." Journal of Hypertension, 2009; 27(6): 1234-1240
10. "A Review of the Relationship between Heart Rate Monitoring and Training Load." International Journal of Sport, Exercise and Health Research 2022; 6(1): 43-54
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