I agree--40/20 is really hard--just sneaks up on you after a bit! I thought it was harder than Tabatacise!
However, I think that some of the older DVD like Hardcore Extreme and IMAX 3, and Cardio Fusion (Body Blast/Drill max, where the rest was NOT timed/planned were harder. Maybe it's just a mental thing. Seeing the rest time counted down really helps with the pacing. Does anyone else feel this way?
Love these new work outs--so much so that I can barely stand steady state cardio now! Seems so boring compared to HiiT, and takes SOOO long!
Christy