I've been "Karve-ing" for 2 years now and I love it! I think it's such a great workout, especially for women, although my husband finds it equally as difficult. I don't like a lot of the high-impact, lose-your-breath workouts so this is perfect for me. I get toned in all the right places...booty lifted, arms sculpted, thighs shaped. Even after 2 years, the workout is never the same and I actually get excited to go work out!