Teachers should exclude children with symptoms of from school.

fifth disease

impetigo

ringworm

coxsackie virus

Iagree with the other person my mom does that with her cooking and sometimes they taste the same as "unhealthy" junk ingredients

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)