(Prāṇa Vāyu): Of the five vayus, it is the fundamental energizing force. It is the inward moving vital energy that governs respiration and absorption, allowing us to take in everything from air and food to impressions and ideas. It provides propulsive energy, speed, motivation, vitality, and the basic energy that drives us in life. Prana vayu is most active in the region of the lungs and heart. The “seat” of prana vayu is the heart, and this vital air ensures that the heart goes on beating. Read more about the vayus.