# Fat utilisation in threshold interval session (not asking F/U at threshold) **URL:** \ **Category:** Uncategorized\ **Created:** [April 20, 2026, 6:17pm UTC](https://www.trainerroad.com/forum/t/fat-utilisation-in-threshold-interval-session-not-asking-f-u-at-threshold/113291 "2026-04-20T18:17:59Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Twowkg](https://avatars.discourse-cdn.com/v4/letter/t/ce7236/32.png) [@Twowkg](https://www.trainerroad.com/forum/u/Twowkg)\ **Post date:** [April 20, 2026, 6:24pm UTC](https://www.trainerroad.com/forum/t/fat-utilisation-in-threshold-interval-session-not-asking-f-u-at-threshold/113291/2 "2026-04-20T18:24:00Z")
> [@Fat vs. Carbohydrate Utilization At Different Power Zones](https://www.trainerroad.com/forum/t/fat-vs-carbohydrate-utilization-at-different-power-zones/87799/2): > > This question has been studied extensively since the mid/late 1800s (no, not a typo). You will therefore be able to find graphs of the relationship between estimated fat and carbohydrate oxidation and exercise intensity in practically any undergraduate exercise physiology textbook and all over the web. Generally speaking, however, in the fasted state (i.e., no recent food intake) we use mostly fat at rest, with a bit of a jump up to closer to a 50/50 mixture during low intensity exercise. From … --- _[View the full topic](https://www.trainerroad.com/forum/t/fat-utilisation-in-threshold-interval-session-not-asking-f-u-at-threshold/113291)._