Definition - What does Maha Bandha mean?
Maha bandha is an advanced yogic practice that involves practicing three major bandhas together: mula bandha, uddiyana bandha and jalandhara bandha. From Sanskrit, maha means "great" and bandha means "lock" or seal." Bandhas are performed in order to channel prana in the body.
Maha bandha may also be referred to in English as great lock, triple lock or supreme lock.
Yogapedia explains Maha Bandha
Maha bandha provides optimum health benefits. To achieve maha bandha, the yogi must perform the three bandhas together, beginning with jalandhara bandha (chin lock), followed by uddiyana bandha (abdominal lock) and, finally, mula bandha (root lock.) To release maha bandha, the yogi releases this series of locks in reverse. Maha bandha can be practiced only after one masters the other three bandhas first.
Physical health benefits of maha bandha include strengthening of the autonomic nervous system and pelvic region. It also supports intestinal function, promotes immunity, regulates thyroid function, strengthens internal organs, promotes core strength and energizes the body.
Maha bandha activates the visuddha, manipura and muladhara chakras. It also promotes a sense of balance, elevates one's level of consciousness and boosts mental clarity and power.