Originally Posted by
RChung
That was the second link. You ignored the first. The first was about inserting a 3-minute all-out test in the middle of an endurance ride. I pointed out the second article because 15-second sprints are enough to go above Z2 and you claimed, "remember that if you go above zone 2, it takes 20-30 minutes for your metabolism to come back to fat burning." So neither a single 3 minute all-out test nor repeated micro-intervals seem to affect metabolism the way you've claimed. Hmmm.
Excellent! So, NONE of the articles you are linking are in contradiction with what I said.
In all my posts, I said that if your metabolism starts burning more fat than glucose - the definition of zones higher than 2 - it takes 20-30 minutes to get back into zone 2.
1st post "effort that requires an adaptation from your metabolism to burn more sugar than fat"
2nd post " if you'd do 10 minutes HIT then 20 minutes "zone 2", then repeat this pattern, you would never be in zone 2"
3rd post " don't do high intensity training before zone 2 unless you want to enter a higher zone for 20-30 minutes"
I never said that 15 secs or even 1 single 3 min. effort would trigger zone 3 and higher! only laps of time I mentioned was 10 minutes.