Deep and conscious inhalation is seen as a healing technique in ancient times. Abundant inhalation of oxygen is a purifying action. The Yogis know it, and they practice it regularly. They even inhale fiery emanations from the fire rituals that they conduct. Varieties of herbal natural products are offered to fire by invoking sounds and the related fiery emanations are inhaled. Deodar, Peepal, Banyan, Sandal wood, Mango, Cedar and such other wood from trees as also specific roots and leaves are used in fire rituals. To bring in vitality through fiery emanation is but a common practice. The result of such inhalation is firstly purification of the body and secondly strengthening the life force in the body. Certain trees identified as sacred in all traditions carry properties of Agni (The Fiery Life Force). Burning of such material and inhaling the emanations is as much a healing activity. The vegetation that grows on volcanic soil inherently carries within, the power of fire and inhalation of such fire emanation from such vegetation has a significant effect upon the mental, vital and physical body. Lying on the planks of Deodar, Cedar, Mango, Ficus, or Banyan also would enable contact with the heart of the wood which has the potential for healing. In modern life wood is replaced by iron which is a significant ‘step down’ in human understanding. Iron is also been replaced by plastic. The modern human activity is progressing towards inferior consciousness while its search for health is on the increase. Building unhealthy energies around and fighting for healthy bodies is the paradox of the time.
Sitting erect, if one makes slow, soft, deep and uniform inhalation and exhalation during the morning and evening hours at the rate of 24 minutes each, would supplement the health in much better way. Yoga has its natural health therapies which have to be adopted into the system of treatment and cure. It is ordained in yoga that a student must keep his organs of respiration pure at all times. A yogi is strongly recommended to keep his stomach and bowels pure. The vitality of glands is directly connected to the rhythmic breathing, hence healing practitioners may avail the yoga of practices relating to breathing for purposes of healing also.