not to mention that butt-clenching is just the simplest way of nonvisibly messing with your vital signs. a guy walking in off the street can butt clench. once

not to mention that butt-clenching is just the simplest way of nonvisibly messing with your vital signs. a guy walking in off the street can butt clench. once you get into some of the intermediate level buddhist body awareness studies, you won't need the butt clench to cause your muscle tenor, heart rate, body temp, and respiration to respond to your will.