I'd like to know what physical activity and exercise the author was getting during this period. I believe that 10 - 12 hours of breath counting was mentioned,

I'd like to know what physical activity and exercise the author was getting during this period. I believe that 10 - 12 hours of breath counting was mentioned, and I can't imagine that being physically still for that long is good for the body. Some of the stuff about involuntary jerking and the author's shoulder reminded me of my experience with a pinched nerve due to a bulged disc in my neck. Also, I'm a bit suspicious of the quiet references to alcohol and drugs. I'm far from a tee-totaler, but I recognize that one man's casual drinking or smoking (i.e. THC) is another's depression or anxiety-inducing dose.