“Straining actually onerous throughout a bowel motion can activate the vagus [nerve],” says Ellen M. Stein, MD, affiliate professor of drugs within the division of gastroenterology and hepatology at Rutgers Medical College in New Brunswick, New Jersey.
“In the event you’re straining or pushing onerous, your abdomen muscle mass are contracting, and that can lower blood move into the vagus nerve,” says Rudolph Bedford, MD, a gastroenterologist at Windfall Saint John’s Well being Heart in Santa Monica, California. “That may make you are feeling dizzy once you stand up after a bowel motion, or drained. Some individuals will even faint or lose consciousness in the event that they’re straining sufficient.”
Holding your breath once you push to poop may trigger you to really feel weak afterward, says Stein.
