In the Hatha Yoga Pradipika, bandhas and mudras are treated as central disciplines through which the practitioner learns to govern prana, the vital energy. Bandhas function as energetic locks that prevent the dissipation of this life force and redirect it into the subtle channels, especially the sushumna nadi. By sealing and guiding prana in this way, they steady the body and mind and create the inner conditions necessary for deeper yogic practice. The three principal bandhas—mula, uddiyana, and jalandhara—are described as especially important when combined, since together they regulate the upward movement of energy from the base of the spine and restrain its escape. In the context of pranayama, these locks are not optional embellishments but integral supports, without which breath retention and subtle work are considered incomplete.

Mudras, as taught in the same text, extend this work of energetic control and refinement. They are presented as advanced techniques that channel and seal prana in particular regions, purify the nadis, and direct the life force into the central channel. Practices such as mahamudra, mahabandha, mahavedha, and khechari are said to awaken the dormant kundalini and help it ascend through the sushumna, piercing inner knots and transforming consciousness. Certain mudras are also associated with preserving the vital essence (bindu or ojas), preventing its downward loss and thereby supporting strength, longevity, and mental steadiness. Through these methods, the practitioner not only stabilizes the physical and subtle bodies but also undermines decay and death and opens the way to higher states.

Taken together, bandhas and mudras form a bridge from the more external disciplines of posture and breath to the inward absorption of raja yoga. By sealing, conserving, and directing prana, they force the life force into the central channel, awaken kundalini shakti, and support the emergence of deep meditative stillness. The text portrays success in yoga as inseparable from this energetic mastery: without the awakening and upward movement of kundalini, the highest goal cannot be attained. Thus bandhas and mudras are not peripheral techniques, but the principal means by which physical practice is transmuted into spiritual realization and the possibility of samadhi is opened.