I am Julia Rhodes, principal colon hydro therapist with West London Colonics.
WLC Wahanda page: http://www.wahanda.com/place/west-london-colonics/
With colon hydrotherapy, the answer falls into 2 stages:
A) Pre colonic preparation
Preparation with hydration is key.
A lot of bowel dysfunction is aggravated (if not caused) by poor levels of hydration (too little water intake) and too much of the wrong sort of liquids (coffee fizzy drinks, alcohol). The prime instruction I give to clients is to drink more water for 3 to 4 days before the colonic. It’s not the only instruction, but it’s the main one.
B) During the session, there’s the split between on table colonics time, and other time. In a typical hour-long session, about 35-to40 min is ample for the former. The therapeutic action is obvious. People typically report feeling good after. The feelgood factor can extends well beyond the session, sometimes for a month or two.