Well I'm using Tae Bo right now and it's fun and effective at the same time. Like, all my cousins have lost weight with Tae Bo and now it's my turn! And they lost the weight like in 3 months! But I gotta say, I bought the Tae Bo box set and it cost $50.00, but it's worth it! The box set includes 4 videos. There's a little bit of everything in these videos.