Why does my 18 year old daughter half to poop 30 minutes after she eats
Eating and drinking kick in colon contractions(peristalsis). That's a good healthy digestive tract. This means she is eating enough fiber and drinking enough water and gets enough exercise to keep the stool moving along the colon keeping her from getting constipated.
I wish my digestive tract worked that well and I'm sure many of the people on this board feel like I do !