# Does workout difficulty adjust to manual changes in intensity? **URL:** \ **Category:** TrainerRoad Software\ **Created:** [November 9, 2021, 6:03pm UTC](https://www.trainerroad.com/forum/t/does-workout-difficulty-adjust-to-manual-changes-in-intensity/65099 "2021-11-09T18:03:33Z")\ **Posts on this page:** 1\ **Showing post:** 5
**Author:** ![bbarrera](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/bbarrera/32/14734_2.png) [@bbarrera](https://www.trainerroad.com/forum/u/bbarrera)\ **Post date:** [November 9, 2021, 6:58pm UTC](https://www.trainerroad.com/forum/t/does-workout-difficulty-adjust-to-manual-changes-in-intensity/65099/5 "2021-11-09T18:58:48Z")
> [@mattodriscoll](#): > > I had Birling -3 on the calendar, and I did the first interval at the recommended intensity, which wasn’t enough, so increased the intensity throughout the intervals until I reached 125% for the last one. I played around with Birling -1 and saw these Workout Levels: - 5.8 level for TR’s Birling -1 which has 4x30-sec sprints and each sprint is 225% FTP for 20 seconds, and then 10 seconds decreasing from 225% to 30% - 5.9 level if I use WorkoutCreator to make a copy of Birling -1 - 56.3 level if I use WorkoutCreator to increase the intensity by 133% (taking the 225% portion up to 300%) some details here: > [@Custom Workouts Get Progression Score - Very Cool](https://www.trainerroad.com/forum/t/custom-workouts-get-progression-score-very-cool/64735/4): > > and on the other hand using WorkoutCreator to make a copy may give good results like simply making a copy. However PLs of sprint workouts in TR can be a little wacky because % FTP of the custom workout is taken into consideration: even though the workout text states: so if you create a custom workout and bump % FTP of a sprint to accurately reflect your % FTP, and its greater or less than (an equivalent) TR workout, you end up with a custom workout PL that is skewed relativ… Quoting the workout description: “Each sprint is intended to be a maximal effort, so adjust the Intensity appropriately in order to barely finish each 30-second effort.” I’d suggest doing the sprints in resistance mode, in order to do them at max effort, instead of playing around with intensity in Erg mode. --- _[View the full topic](https://www.trainerroad.com/forum/t/does-workout-difficulty-adjust-to-manual-changes-in-intensity/65099)._