A short saying to share, by 葛洪 in his writing 《抱朴子》：
"若要不死，肠中无屎；若要长青，肠要常清。"
In english, it means if we wish to stay healthier and longer life, it is very important to keep our colon and intestine clean and clear.

By theory, a good habit is to have 3-4 times pass motion a day.