This app shows a graph of your recent HRV, average HRV, and HRV co-efficient of variation. # Features * Graph of the past 14 days of HRV (ms), rolling 7 day average HRV (ms), and HRV CV (coefficient of variation) as a percentage (0-100%) NOTE: The horizontal scale is labelled with the day of the month. HRV CV (coefficient of variation) quantifies the fluctuation in daily HRV. It is calculated as the standard deviation (of daily HRV) divided by the average HRV and expressed as a percentage. While the average HRV reflects average vagal or parasympathetic activity, the HRV CV represents the amount of variation, such as the stress (decreases in HRV) and recovery (return to at or above baseline) response to training and lifestyle events. Athletes who are more fit tend to show less fluctuation in their daily HRV scores (i.e., a smaller HRV CV value). A higher HRV CV value generally suggests better recovery and a more resilient body, while lower scores may indicate the need for rest or adjustments to your training. # Interpretation Examples Case: Increased HRV CV, no change or small decrease in average HRV Indicates an increase in physiological stress. Typical during new training phases (novel training stimuli) or increases in training load. A possible early indication of fatigue. This also tends to occur in situations of detraining. Case: Decreased HRV CV, moderate to large decrease in average HRV Indicates a more severe level of physiological stress and generally the least favorable response in athletes when purposeful overreaching is not desired. It is best not to let this persist for over 1 week. Case: Decreased HRV CV, increase in average HRV Indicative of positive adaptation and possible increase in fitness. Would suggest that you are handling training very well. Typical with reduced training load or tapering. However, under situations of very high volumes of endurance training, this trend is likely indicative of parasympathetic hyperactivity and fatigue. For more information, see: https://ko-fi.com/Post/HRV-CV-Coefficient-of-Variation-Widget-S6S41GA33E # Instructions This app required an intervals.icu account linked to your Garmin Connect account. For setup details, see: https://ko-fi.com/post/Setting-Up-Sleep-Data-for-the-Health-Dashboard-Wat-G2G3WI307 After setting up the intervals.icu account, save your intervals.icu credentials in the widget settings using the Garmin Connect IQ app. An internet connection via the Garmin Connect app on your phone is required for this widget to function. # FULL Version Features * Customizable graph interval, up to 50 days # Payment For the FULL version, use this link to pay €1.25 via Stripe (no account required; credit card, Apple Pay, Google Pay accepted). https://buy.stripe.com/eVq3cwbLO3C2cRh62yf3d0j 如需通过微信或支付宝付款，请使用此链接：https://buy.stripe.com/8x23cw6rufkK7wXaiOf3c1S Alternative payment via Paypal: https://www.paypal.com/paypalme/trudelta/1.25EUR Important instructions to get your unlock code quickly: https://ko-fi.com/post/Payments-via-PayPal-Z8Z6AIK78 Payment via Stripe is recommended because you will get the unlock code immediately on the payment confirmation page. If you don't get a reply within 8 hours, see here for help: https://ko-fi.com/post/Common-causes-for-not-receiving-your-unlock-code-N4N8BUEGH

Version 1.5.0 Attempt to correct difficulty in reading HRV data for long graph durations. Version 1.4.1 Added support for the D2 Mach 2 and D2 Air X15. Version 1.4.0 Fixed possible crash or non-display of the graph if there are very few HRV data points available. Version 1.3.1 Added support for the Fenix 8 Pro. Version 1.3.0 Improved performance. This is a required functional update.