We calculate target heart rate (HR) by using the Karvonen formula:
Target HR = ((Maximum HR - Resting HR) × Intensity %) + Resting HR
Let's use the average values of Resting HR (70 bpm) and Maximum HR typical for a 20-years old (200 bpm).
The fat burning zone starts at 60% of the intensity of the exercise.
Target HR = ((200 bpm - 70 bpm) × 60%) + 70 bpm
Target HR = 148 bpm Read more