Here comes 48 minutes of sizzling Hot Cardio from Christi Taylor, beginning with her Incredible Invisible Warm-up. This invisible warm-up concept allows you to enjoy incredible cardiovascular training right from minute one. It works by incorporating vital warm-up movements placed ingenuously within the first 5 minutes, while at the same time elevating the heart rate quickly for maximum calorie burn! This Hot Cardio workout takes off instantly toward exciting and challenging Hi/Lo Aerobic training. 49 min - Hi/Lo Aerobics; 10 min - MoveMaster™; 48 min - Special Features.