Amazing!!! Chalene Johnson is the best instructor there is. In Chalean Extreme she leads you through fast but very effective weight routines. Each month the focus shifts a bit so you will see improvements in each section. The lean interval videos are designed to burn fat while increasing your endurance. The videos are a huge asset to your workout collection. You will not be disappointed.

Pros: Build muscle, burn fat, increase endurance

Cons: You may need to purchases heavier weights.