What type of yoga is included in the P90X workout program?

The type of yoga included in the P90X workout program is Yoga X, a vigorous, dynamic, and intense style of yoga that combines strength, flexibility, balance, and breath work. It's designed to complement the other high-intensity workouts offered in the P90X system. Yoga X incorporates various poses from different yoga styles, such as Ashtanga and Vinyasa, to create a rigorous 90-minute session which aims to enhance overall fitness. The inclusion of Yoga X within the P90X regimen underscores the importance of a holistic approach to fitness that addresses not just muscle building and cardiovascular health, but also flexibility and mental focus.