Well, I took my olive oil last night and went straight to bed exactly per Clark's instructions.
I woke up a little late today and took my 3rd epsom drink at 8am. I felt some rumblings after I took the 1/2 cup olive oil drink but I think this may have been due to hunger. (The olive oil was rather distasteful to drink down but alternating sipping of olive oil then freshly squeezed lemon juice helped to mask the distaste. The Epsom Salt wasn't so bad with a little bit of lemon squeezed into the drink.) I woke up this morning without any bowel movements, not even the slightest urge. No need for urination either. Odd. So far, I don't feel any different except hungry but will follow Clark's instructions and won't eat until 2 hours after taking my 4th Epsom Salt drink.
I have been following an ultra low fat diet for the past 6 months so wonder if this could have any impact. Maybe the liver is accustomed to not producing much bile? I don't know. Right now I'm not getting any bowel movements whatsoever so may consider a coffee enema later in the evening if I continue to not have any bowel movement.