Correlation <> causation. Most people tend to poop around the same each day. Largely because we tent to eat around the same time each day. Most people tend to

Correlation <> causation. Most people tend to poop around the same each day. Largely because we tent to eat around the same time each day. Most people tend to drink coffee at the same times each day. Naturally for a bunch of folk one will co-incide with the other, at least some days a week. The added factor is that most people (who drink coffee) drink multiple times per day, allowing for more correlation opportunities. But mostly what causes pooping is eating (he says, speculating, with no data to back it up.)