If, hypothetically, you are constipated, you could eat a Fiber One bar to help with that problem. HOWEVER, if, hypothetically, you are NOT constipated, and in fact, generally lean a bit in the other direction, eating a Fiber One bar will have the same effect on you and try to correct the problem you DO NOT have. By the end of the day, you will be afraid to be more than 5 feet from a toilet. Y'know, HYPOTHETICALLY.
The Girl Who Pooped 15 Times Yesterday