MUL BHAND/ROOT LOCK The root lock is the most complex of the locks and it is frequently applied. It coordinates and combines the energy of the rectum, sex organs, and navel point. “Mul” is the root, base, or source. The first part of the mul bhand is to contract the anal sphincter and draw it in and up as if trying to hold back a bowel movement. Then draw up the sex organ so the urethral tract in contracted. Lastly, pull in the navel point by drawing back the lower abdomen towards the spine so the rectum and sex organs are drawn up toward the navel point. This action unites the two major energy flows of the body: prana and apana. Prana is the positive, generative energy of the upper body and heart center. Apana is the downward flow of eliminating energy. The root lock pulls the apana up and prana down to the navel point. The combination of the energies generates the psychic heat that can release the kundalini energy. This lock is applied with the exhale. It is also applied on the inhale when specified.<em>MUL BHAND/ROOT LOCK, page 41 of “Sadhana Guidelines.”</em><em>--------------------------</em>And is it okay/effective to do the Sat Kriya in an easy pose instead of sitting on my heels (it hurts my legs 
) ?And how do you squeeze the energy from the base of the spine up to the top of the skull? do you just tighten your muscles upwards?<em>
</em>
) ?And how do you squeeze the energy from the base of the spine up to the top of the skull? do you just tighten your muscles upwards?<em></em>
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