This response occurred probably something on the order of once a week or even twice a year. Today we trigger this powerful response even hundreds of times a day. Herein lies a big problem, when it is triggered the vascular system is altered, heart rate is increased and the Endocrine system is essentially put on hold, to name only a few things that happen . Our endocrine system is the master glandular control system for all our physiological functions. The result of repeated adrenal elevation occurrences is damage or dysfunction of our entire physiology, especially to our Immune systems.
Meditation is something very few really understand, it involves Quieting The Mind.
The less sensory input the better. Total Darkness, Total Quiet, Total Lack of Sensory Input. Many would say this would drive them crazy, that is a distinct possibility, since it is something we are not accustomed to. The fact is, it must be approached with caution and discipline. One result of meditation could be considered is the process of reclaiming ones sanity.