Sri Aurobindo
Letters of Sri Aurobindo
Volume II - Part 3
Fragment ID: 11922
You can write to him that it is not safe to do Pranayam except under the directions of a guru who is siddha in either Rajayoga or Hathayoga. Gasping is obviously a sign of something wrong – for the breathing in Pranayam must be perfectly unimpeded and regular. It is better either to stop the Pranayam or to find out somebody who is practised in the method and take instructions from him what to do.