Fitness walking is brisk, vigorous walking - usually from 3-1/2 to 5 miles per hour. O True
O False

when you rub, you also apply pressure, that pressure can urge the poop to come out. i think that when your rubbing, you also might be slightly breaking it up and that can further fill the stomach.  

answer: c more big rigs and commercial vehicles

explanation: because big rigs drive far to deliver products overnight