The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
If quality of form is important, so maybe this is using weights, maybe you're doing squats, so you're going to do 20 seconds on and 100 seconds of rest, what you'll find is that the longer rest, even though it's 20 seconds of intense effort, followed by a longer rest of about 100 seconds, will allow you to perform more quality repetitions safely over time.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
And also, again, modifying the work to rest ratios too is another sort of way, I think, that it's like, oh, I have to go all out for a minute or two minutes or three minutes. But oh, what about 10 seconds? You know, what about 10 seconds? So there's a lot of ways to sort of modify the HIIT program in general.