There are no healthy humans---only people healthier than others.
No matter how healthy one appears---if they do anything to "improve" their health---The Yuck! starts appearing as sore throat, lung congestion, fever, -----always, in every case, no human can cleanse too fast--if they did that, they would suffocate in their own waste.
Also called CONSTIPATION---if the waste can not exit fast enough, the waste drowns the body.