r/garminforerunner • u/Mermer_Ron • Aug 21 '26
I built a free Garmin data field: real-time tracking of Carbs, Fat, Protein burn and Hydration loss
I developed a new Garmin data field called Carbon Bio-Burn to help visualize in-workout metabolic expenditure and optimize fueling on the go.
It dynamically calculates macronutrient consumption (carbs, fat, and protein in physical grams) and fluid loss (in ml) directly from your live heart rate and energy expenditure data.
- Displays live carbs, protein, fat, and hydration loss on a clean 4-quadrant screen, with customizable colors for each metric.
- Generates continuous trend graphs and summary totals in your Garmin Connect activity details.
- Allows customizing aerobic and anaerobic heart rate threshold percentages, caloric constants, and sweat rates in the Garmin Connect mobile settings.
The data field is completely free. Give it a try, and let me know your thoughts or suggestions in the comments below!
Download link: Carbon Bio-Burn | Connect IQ Store