Threshold intervals too hard

[jarsson]

Maybe you will find something helpful here:

Threshold riding for beginners

Introduction: I decided to write this post because there is a lot of beginner cyclists that are new to training, afraid of threshold riding and they can find it helpful. The intention of this post is not bragging, because despite the gains (spoiler alert!) I know that my other parts of being a cyclist are “crap” (FRC is on the level with 5-years old girl, my sprint is non-existent etc. So this is only a snapshot of the bigger picture) I am not an athlete by any means, 35 years old guy that is …

If you struggle at intervals 7-9 min long@100% FTP I would personally start with lowering FTP. 10 min intervals should be around 7 RPE, maybe 8 in couple of last intervals done at 100%.