I have always read, including here, that 12 minutes is minimum for a coffee enema/implant as it takes 12 minutes for the all the blood in your system to to circulate through the liver to be cleansed. I am sure that the blood between the colon and the liver makes many "trips" in this time. Whatever, I can often feel and hear liver/gall bladder action up to 30 minutes after infusion. If I don't expell before, it takes a couple of hours for 12 oz of water to be absorbed to the point that the discharge is not "wet". Whatever, I still wonder about leaving residual "coffee grounds" (not literally of course) in my rectum until the next BM which could be 24 hours. Hopefully, there is no negative impact.