went back yesterday for another class. fantastic, last week I was using an 8 kilo kettlebell (they come in 4, 8, 12, 16, 24, 32 and 40), and it left me sore all over. this week I was using a 16 already, basically just due to being more comfortable with the grip and the basic movements. i guess last week I was very unsure of how to handle it and that affected what I could do. In any event, an excellent workout, and i am pleasently sore from it.