I don't see any comment included here about the vagus nerve. Doesn't that nerve need stimulation, to perform all the digestive duties? I know that rebounding or any other type of bouncing the body (walking, stair climbing) as well as stretching exercises for the torso, and even humming/singing, temporarily stimulate the vagus nerve. Many of us are doing too much sitting and then complain that our systems aren't working. There is no need for extreme or exhausting measures; just try good movements every couple of hours, for 15-30 min. This helps me. I'm 75 and have gastroparesis. (I also avoid food products which might be treated with glyphosate, a ubiquitous herbicide used by farmers for maximum harvests). Stay warm!! (I've been outside in 20 degrees and it's really NICE)(just walked to the compost pile and picked up a few frozen fallen branches)