Releases tension from the back
Supports optimal posture
Provides a massaging effect for the kidneys and adrenal glands
Reduces stress
 
This meditation uses a mudra, which is a gesture of the hands, face, or body for promoting physical health, psychological balance, and spiritual awakening. Mudras evoke psychological and spiritual attitudes, with each mudra having its own specific energetic quality or "signature". Most importantly, mudras have the power to direct prana (life force energy) in a particular way. They can be a powerful tool to incorporate into your meditations.
 
A reference image of the mudra can be viewed above.