That's true. When reading the Discussion of the article I quoted from, it struck me how much they talked about the aspect of enjoyment. But when you think of it

That's true. When reading the Discussion of the article I quoted from, it struck me how much they talked about the aspect of enjoyment. But when you think of it, this aspect is huge, because it basically determines whether people will actually follow through or not. A few percent increase in VO₂max is useless if people will hate the regime and will simply not do it.