Based on a research done for a treadmill run lab recently, the results below show much of my fuel at my hr is from Fat and Carbs at different hr.
| HR | FAT% | Carbs% |
|---|---|---|
| 68.0% | 90.0 | 10.0 |
| 70.0% | 70.3 | 29.7 |
| 73.5% | 55.8 | 44.2 |
| 76.5% | 60.0 | 40.0 |
| 90.0% | 30.0 | 70.0 |
So if you want to burn fat, you know what to do…