What are the healthy sizes of teenage girls based on their ages?
12: ?
13: ?
14: ?
15: ?
16: ?
17: ?
18: ?
example: small, medium, large, extra-large

12-13 small or medium
14-18 medium or large

It honestly just depends on how ur body is. U could be tall and have the smallest breasts and someone next to u is just as tall and have the largest breasts. Just depends.

My sis is small and 13 so i woudnt really know here goes anyway, 12- 13 small-ish 14-15 medium 16-18 large

Well if you pick a machine to work on and that's gonna be your exercise if you don't stick to that machine your muscle strength your muscle mass rather will change because you haven't been doing it you change something in your exercise routine which changes your body's form of dealing with things for example you might become weaker or stronger depending on what kind of exercises you do in whether or not the machine you picked actually your muscles grow.

The most common stereotypes could be that boys don't cryboys don't get emotional boys are never as mature as girlsboys are lazyetc.