I hate core work. Absolutely hate it. Bores me to tears and always hurts my neck. That said, I really enjoy this workout! It's a great mix of floor and standing ab work with creative exercises and very little crunches. One of the best in the Piyo set for me. Some of the Piyos seem a bit repetitive and easy but not this one. It's right where I need it to be, a solid intermediate.

mmis29