damn i was all ready to blow the dust off my trainer, i was hoping for 'fitness in a can'!You need to have a pretty good base already, it's really just an added workout 5 times a week. Seeing as it's a 14 minute workout, I thought they would be a good addition to my existing "training" as you could nearly do them in an ad break.
Well I tried these intervals for the first time this morning, pretty hard but not as bad as I thought. I guess we'll see how they go after 6 weeks.
I should have pointed out these intervals are:
20 sec max effort
10 sec rest
repeat 8 times.
They are supposed to do good things for both aerobic and anearobic systems.