The word pranayama is actually the pranayam, which means the regulation of breath. Pranayama is Regulation and restraint of breath.
1. Is Pranayama just a breathing exercises?
There are many types of Pranayama that are mentioned in various ancient philosophy texts. Surya Bhedana Pranayama, Kapalbhati pranayama, anulom vilom, bhastrika, Ujjayi Pranayama, Bhramri Pranayama, udgeeth pranayama.
2. Where did Pranayama come from?
Pranayama is the part of Ashtanga yoga. Pranayama is the fourth limb of Ashtanga Yoga.