Warning:  It takes a lot of time(years)to develop the ability to handle this spiritual-physical exercise in its most intense form.  The body needs to be given time to adjust as to frequency, duration, and intensity of any intense type exercise including this meditative type.  One should consult a medical doctor if you have any conditions that could make this exercise unsafe in any way.  This should be done at your own risk.  The spiritual has a really inner individual focus,  unlike science, and one has the accept responsibility for ones own actions and ones ability to sense intuitively what will work best for you.  Crisis always entails risk, and all effective spiritual exercise trains one to handle life at its most intense, so their will be risks, and one needs to do ones best to be vigilant so as to avoid serious trouble even when faces really tough challenges.

All meditation…