sugar-

-  a  man  was  seen  going  to  his  kitchen  every  day  , opening   his  sugar  container  and  then closing  the  lid  and  leaving  the  kitchen  same  time  for  several  days, finding  this  an  odd  habit  in the  man  someone  asked  the  reason, the  man  said  the  doctor  had  ased  him to  check his  sugar  regularly