[cfexistenz]

Guter Einwand, nach Joe Friel ist diese Zone (d.h. 85-90% HRmax) auch zu vermeiden, allerdings mit ein paar wenigen Ausnahmen:


hier zum nachlesen

"There is nothing inherently wrong about training in zone 3 so long as it is beneficial for your race goals. If you are racing in events that are longer than about 2 or 3 hours and shorter than about 6 or 7 hours you will spend a lot of time in zone 3.

[...]

So why all of the concern about zone 3? Well, if you don’t race in events of these durations then zone 3 can possibly waste a lot of time. Zone 3 is what may be called “happy hard.” It’s challenging enough that you feel as if you are accomplishing something (after all, it’s kind of hard) and you can do it for a fairly long time. That makes you happy. But again, if not racing at this intensity then your workout may not have accomplished much in the way of race-specific fitness."


Für einen Halbmarathon (und das war die Intention des Threads) ist diese Zone eher irrelevant.