The air should be expelled with proper tact and should be filled in skilfully; and when it has been kept confined properly it brings success.18. Note: The above caution is necessary to warn the aspirants against omitting any instruction; and, in their zeal to gain success or siddhis early, to begin the practice, either by using too much force in filling in, confining and expelling the air, or by omitting any instructions, it may cause unnecessary pressure on their ears, eyes & and cause pain. Every word in the instructions is full of meaning and is necessarily used in the slokas, and should be followed very carefully and with due attention. Thus there will be nothing to fear whatsoever. We are inhaling and exhaling the air throughout our lives without any sort of danger, and Prâṇayama being only a regular form of it, there should be no cause to fear.