Bandhas in Indian Yoga are a set of muscle locks, which have as their aim to lock Prana (vital life energy) in particular areas of the body and then, after release, channel the energy flow with increased pressure through the body.
The ultimate goal of practicing Bandhas is spiritual awakening, but they can also be used for more down-to-earth therapeutic purposes.
There are four main Bandhas: Jalandhara, Uddiyana, Mula and Maha. The last Bandha is a combination of the first three. Mind that some categorizations talk of three Bandhas, others about five, and so on.
Mula Bandha (also written Moola Bandha) then is the contraction of the muscles deep to the center of the perineum. It has in fact much resemblance with doing Kegel Pelvic Floor exercises. It’s held for the duration of a breath, then relaxed, and it’s repeated 10 times.
This Bandha stimulates the pelvic floor and nerves, and tones the urinary and genital systems. As a result, it can, for instance, raise low libido and alleviates erectile dysfunction in men, and vaginal dryness in women.
Additionally, it relieves symptoms of depression and stress and it can also neutralize other emotions. As an example, if someone wants to stop crying, laughing, or coughing, doing Mula Bandha can control that.