Explain why life is so hard

It just is. There’s no explanation why it just is...

Only ten amendments were ratified by the states.

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)