Your body is digesting food that remained in your intestines and also fat deposits. Toxins are in the fat and removing undigested food can have a liberating affect.
Undigested food does not stay in your intestines and neither does any toxins.
Can you name any of the toxins?
'Toxins' could be a poor word choice on my part. There are things, within fat, that disrupt our body's ability to function. It could just be 'its bad fat' that was ingested by a poor diet.
You think there are pieces of fat getting stuck in your digestive system?
If food is being left behind undigested in your intestines please get off the internet and see a doctor!!!