Why consuming large amounts of vitamin a is more dangerous than consuming large amounts of vitamin c?

Overconsumption of vitamin A can cause rashes, headaches, drowsiness, nausea, irritability and problems in muscle coordination.  When symptoms develop it would be best to decrease your intake of vitamin a supplements for at this point it does more harm than good.  Unlike vitamin a, overconsumption of vitamin c only leads to excess to leave the body through fluids.  Still it is better to maintain balance intake to avoid any health problem.

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.  

teens need 8-10 hours of sleep. it kind of depends on what time you get up. but prob around 10 or 11 p.m. or 11 or 11: 30 p.m.