Each in-vehicle securement location must have a two part securement system? true or false

Ithink it true i might be wrong so don't take my word that its true.

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)

Rub your hands together twice as long as washing your hands? or make sure to in between your fingers. or wipe ur hands off with a paper towel when done.