In this short video you can learn how Stone (HRV biofeedback) works.
TIME magazine has described Dr. Deepak Chopra as “one of the top 100 heroes and icons of the century”.
For full description and pictures of Stone HRV biofeedback Click There.
[…] What Dr. Deepak thinks about biofeedback hrv technology we use in Stone you can watch here. […]
Excellent, gonna try this.
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