I have been looking at several workouts I would noramally not even dare to look at in normal circustances (covid-19 means working from home until the end of the year, so I get 3h of commute back). What I am currently looking at are the likes of Polar Bear +1 or phoenix +2. I did Polar Bear before and it was by far the hardest workout I had ever done. So, I had a couple of questions about those workouts.
What’s the best way to get to a mental position where I can do those? I noticed they are everywhere in Triathlon plans so, I wonder if the only way to complete them is to either have done lots of workout of that duration or having an incorrect FTP (low)
How can I incorporate such sweetspot length in my current plan? I started with a mid volume plan and swaped wednesday workout with Boarstone (2h z2) and added Boarstone -1 on Friday (2h z2). Would it be reasonable to swap one of the Boarstone with Polar Bear /+1 or Phoenix /+1 without changing the rest of the plan? I have done high volume plans before but those two are quite something else and I am worried they might just break my motivation for the rest of the plan.
I am a couple of weeks into a new plan and scheduled to do a session of over-under the next day. Would swapping some over-unders with these workouts (maybe every other week) negatively affect the plan goal?