Deb! So glad to see you here! Nice work! I have replaced Hardstrikes for Ride or other cardio as well. I love kickboxing but I think I have only done it once and I have been at this rotation for like 7 weeks!I start Week 5 tomorrow. I am really enjoying this rotation. I've never done an "official X-train rotation", only piece-mealed the workouts into my own rotations. I've avoided some of the workouts in the past, like Cardio Leg Blast - what a workout! According to my fitbit, my heart rate is highest on this workout - more so than Hardstrikes or AOLIH. I have been adjusting the rotation to put the Core, Rear Delts and some HRC into some of the shorter workouts and not with the Leg workouts; I also added Ride in place of Hardstrikes or AOLIH a couple of times or put those on Bi/Tri days so I could add a longer cardio on another day. This week starts Tabatacise (another workout I've avoided in the past), and SuperCuts ... we'll see how it goes. So far, no dread-factor and no boredom - Cathe did a great job with this series.