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I plan to go back in a few years. To have every hour of your day scheduled, from waking to bedtime, is liberating, not confining, I've found. I cannot say for sure if I am meditating correctly, but I can say that sitting for hours lets me clear out a lot of garbage in my head. I plan to sit still for at least a few minutes a day. I will, however, do it with back support.
Complete Article: https://www.straitstimes.com/lifestyle/clearing-the-garbage-in-my-head-at-a-10-day-silent-retreat
More Info: http://www.dhamma.org/