The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
so for examp example if and I've often thought about this now as I just want to make sure my zone 2 is above 3 watts per kilo would I be better off taking that extra training if I have one additional training session per week should I make it an additional Zone 2 workout so then I do four now should I be doing a fifth one or should I be taking that fifth one and doing a V2 Max protocol
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
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.
Zone 2 Limitations for VO2 Max
For example, around 40% of people engaging in zone 2 training for 2.5 hours a week for months do not experience improvements in VO2 max until they add in HIIT.