LowMax is a real burner!!! I burned 557 calories according to my HRM the last time I did it. This is in comparison to MIC, which is also a 70 minute w/o like LowMax, where I burned 586 calories. The intensity of MIC especially it's hi/lo portion seems so higher than LowMax but the calorie burn isn't much different. Compare also with the Gauntlet of the Terminator DVD at 522.
I use only one set of risers.