Yoga and Power Yoga are to be understood with different meanings and concepts. Yoga is based on the Ashtanga Yoga taught by sage Patanjali, the author of the Yoga Aphorisms. Ashtanga Yoga includes the eight limbs of Yoga, namely, yama, niyama, asana, pranayama, pratyahara, dharana, dhyana and Samadhi.
On the other hand, power yoga is the word used to indicate the Yoga system prevalent in the western countries as a form of ‘keep fit’ program. This is the main difference between the two words.