Originally Posted by
FrenchFit
The issue is controlling the rest intervals, which might range 30-90 seconds depending on your work-out goals. Several minutes rest between effort intervals defeats the purpose.
Off the bike you might get a similar benefit by Tabata routines, 20 sec. rests, plenty to pick from on Youtube.
With the local hills the rest interval can be anything I want it to be, because I can coast downhill very quickly.
A different slant on the question: so I go up the hill and reach the "just short of booting" level of intensity. I coast back down. When do I turn around and go up the hill again?