Two things. We are currently including sweet spot progressions in our plans which are not the same as sweet spot intervals popularized by TR. We are creating progressions that build to sweet spot intensities as our “main work” but secondary work is still lower than sweet spot and generally the main work gets longer and longer progressions but overall much easier than TR’s type of sustained sweet spot. But you also found a bug that this sweet spot progressions is missing in this plan.
Our belief is their is a re-education process currently going on including Dr Seiler’s Polarized and Dylan Johnson’s youtube videos and a general long history of training fundamentals that TSS as the primary goal is not the best practice.
All that being said, we are open to others beliefs and don’t belive the TSS focus is 100% wrong for all people (just most) and feel that in order to represent what many people likely want due to the plan ecosystem that Coggan/TR and others have created we will need to add some more “traditional” sweet spot interval workout progression plans. Those will be coming soon.
We base our plans on long standing fundamentals and science proven training. HIIT has been been science proven effictive for time crunched individuals. Lower TSS (polarized for example) has also been proven more effective. High TSS plans have not been scientifically proven so we have not included them. I know lots of people say it works for them but that is not science or does it show that it is more effective then more tradtional plans. Sorry this stuff gets me excited…
I fixed it. So you either get a long ride or a second HIIT now. See below
You can see as the plan gets longer you do have a main work progression that gets longer so more time at sweet spot but still not like TR.