Bandhas (Body Locks)
The bandhas are locks or seals applied to different parts of the body. Bandhas “lock in” the energy that you are generating during yoga. This action creates a hydraulic seal, so that prana (life force energy) and apana (eliminating force) can be directed as intended by the yoga practice.
When the two opposing forces of prana and apana are consciously balanced in the body by use of the bandhas or body locks, and other yogic techniques, the yogin experiences a calming neutral state of being.