What is a "set" in weight training?

It mean that u can design a strength -training (or weight training ) program without knowing two term :rep and set )
Hope this help you

A set in weight training refers to a series of reps of an exercise that is usually repeated multiple times. One might do 4 sets of 10 reps of an exercise.

Afew buddies come over to your house to hang out. they notice you're struggling in school, perhaps you have to rely on to pass your class, but you can't absorb the knowledge. they could positively reinforce getting a tutor and working with you, dedicating more time to the areas of struggle and less on hanging out to better yourself.secondly, say you're the victim of bullying. you're afraid to tell an adult because of possible repercussions from the bully himself. your friends encouraging you and pushing you towards telling an adult for your safety is another example.