For those who have this post bowel movement "syndrome" which has symptoms like:
1. Extreme weakness 5-10 minutes after finishing a regular BM, that can last from a few hours to many hours/whole day-till the next BM
2. Increase heart beat / Heavier breathing / Sleepiness
3. Diffuse pain all over bowels when pressed but not the usual stubbing pain of food poisoning for ex.
4. More intense symptoms after a larger ΒΜ and much less so with a more constipated/difficult/hard one (so the intensity of straining is not related to this)
5. Constipation (not going for a day) helps ease the response intensity the day after
6. Not the same intensity every day
I have experienced this syndrome most of my life. No medical diagnosis (many gastros have find it amusing), no helpful intervention, many failed drug experiments (antinflammatories, antispasmodics, IBS drugs, CBD etc). What I have find to be the most useful is to immediately after a BM -and even before the symptoms kick in hard- lay down on your stomach/prone position (preferably with hands up below head) for 15-30, or till it stops feel unpleasant. This position increases discomfort but it helps ease the syndrome symptoms much faster and more efficiently, so one can go on with their day. Contrary, the supine position may increase the time that these symptoms last. Other things that may be helpful: sleeping, hot showers/hot pads
This multi symptom syndrome has been loosely linked to vagus nerve stimulation but nothing solid has been approved. However, it seems to act like a "cut" where the intensity of the symptoms climax few minutes after the event, and pressure helps it ease.
Hope that these observations might be helpful to someone.
