Those are pretty much what Hunter Allen prescribes here (one of the workouts, at least).
http://www.hunterallenpowerblog.com/2014/04/what-to-do-next-v02max-intensive-plan.html
I don't think they're that bad, but I do them on a nice 3-4 min hill, so that helps. I try to only do 2.5 min recoveries as well.
http://www.hunterallenpowerblog.com/2014/04/what-to-do-next-v02max-intensive-plan.html
I don't think they're that bad, but I do them on a nice 3-4 min hill, so that helps. I try to only do 2.5 min recoveries as well.