7.8 Hz - Chill Out before you Sleep
This is a great frequency - the earth resonates to it too!

Infra frequencies - ultra low frequencies ULF - to harmonize the tissue to their natural harmonics

The 7.8 Hz is very calming and relaxing, some prefer 8.0 and 8.5 test them to
1. Balance the brain hemispheres
2. Other parts of the body where you are experiencing stress