Copper the cat has discovered that eating healthy, especially his favorite food-fresh spinach-makes him feel strong and happy. However, as an indoor cat, he doesn't get much exercise, even when he runs from one end of the house to the other. One day, Copper noticed his mom doing yoga exercises, which reminded him of his own stretching moves! He decided to join in and began feeling better and more flexible. Copper now challenges readers to try six different yoga stretches and suggests doing them at least three times a week to stay flexible and relieve stress.