You are a healthy adult who is trying to incoporate more physical activity into your life you should strive for at least minutes of exercise per day

answer; i believe that the correct answer is (participation);

answer; 100 languages;

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.  

perspiration and respiration.