michefit
Cathlete
I am sure this has been posted before - but I would love a new cardio series that really pushes the cardio threshold - i've something related to the idea that intense bursts of cardio causes an extra boost to the metabolism. Something like the Imaxes but with even less rest periods - and a complementary workout with a steady state cardio that could alternated on different days. Anyway always love it when Cathe pushes me to the limits...endorphins yeah!