I have been checking out the Hemi-Sync program for the purpose of manifestation, not so much lucid dreaming or OBEs. One of the preparatory exercises in every wave is "Resonant Tuning" which requires us to breathe in and, whilst exhaling, hum along. It is described as an important step to enter a meditative state, and/or produce some sort of healing / energy alignment in the body. It has been compared to the Gregorian chants or Om sound in Buddhism.

My issue is that sometimes I want to use the program in the office during lunch or break, but it is not so convenient to do the humming. I'm wondering if anyone has any insight into whether this is an essential step and cannot be skipped? Or why this is so important?

The explanation on the website is as such : This time-proven exercise may be used in preparation for entering meditative states or simply to quiet an overactive mind. It also promotes an accelerated gathering of your subtle life-force energies. Enjoy a heightened sense of these energies as they become revitalized with Resonant Tuning and benefit from their healthful influences on both mind and body.

Hope to get some advice! Thank you.