The breath is fully let out "swallow the breath" as if swallowing some water after completing a Mahat Yoga Pranayama.
Within the lower portion of the brain, a "clicking" feeling may be felt, suggesting that the Respiratory Certre is being engaged.
Apraakasha Bindu Mudra is a Mudra with a variety of benefits.
- One should 'lock in the breath' as though doing a Prana Bandha.
- Another benefit is to overcome negative emotional and mental conditioning.
- When one feels emotional, it is impossible to swallow one's breath.
- The breath cannot be swallowed if one is hypnotized or crazy.
- Focus the thoughts towards the back of the head, in the Bindu area, to encourage positive control.
You may also want to read more about Yoga here.
You may also want to read more about Yoga Asanas and Exercises here.