Interval Max
IMax is more of a step tape. You warm up using the step. The intervals have three parts each. The aerobic portion is done on the step. Some of the anerobic portions are done on the step and some of them are done on the floor (for example: on the step you do lunges, power circles, and on the floor you do plyo-jacks, power scissors). After each anerobic portion you get a recovery segment basically done on the floor (gravevines, etc.).
Does this help?