Yeah. I definitely wish I hadn't posted about an easy "pace". There isn't any easy pace and you are definitely correct, it's individual. The key thing is just HR. 70% max is obviously arbitrary, but it's also based in the logic that for the vast majority this is going to be under LT1. in most cases, quite a bit under. For others, it might be closer and clearly running at a much lower % will make sense.
When I speak to people about training like this, the most common reaction is "I can't run that easy, it's impossible". Takes a while I think for people to come aorund.
I really have dived into it in the book, a lot. A long with a lot of other things. I didn't realise until I sat down and wrote it, how much I actually put into making up training and performance outside of what it looks like "4x easy and 3x sub threshold". Even those as a basic concept, there is a hell of a lot to unpick and understand. I really think there is value in understanding in what we are doing and why, rather than just doing. You are more likely to also stick to it, with the understanding and knowledge.
I had a great weekend with Jiggymeister from the thread, we spoke about all these little things a lot and I think even though we have spoken for a couple of years now, I think he was surprised by just how much I am obsessed with marginal gains. Of course, that doesn't mean everyone should be, or should even care outside of the basics of what this thread is, going back to 4x easy and 3x sub threshold.