Why does this crop up to girls?

Yeah so I was wondering something.I know girl's nipples grasp hard when its cold(guys too)but is that the one and only reason.does it also surface when they area aroused or turned on.in recent times curious is all.
Answers:

Nuvaring have lowered my sex drive. Will it come back?

yes, girls' nipples do pop out more when they are turned on. This happen because more blood is rushing to the area.

Boob employment how long does it take to make well.?

Don't really understand the ask..
do they get frozen when we're aroused ? Yes.
Why do they? I have no clue.
Hope I help !

Period Start = 16th, It's now the 20th = No Period Yet =(?

yes they also pop out when turned on

I'm 13 and hold 2 get my first physical @ a actual hos. what do they do and is it just u and the doc. no mom

yes they do. But they also bring hard sometimes for no point at all.

Ladies-what would be your aversion if you caught your brother using your razor that you used a few days ago?

Yes ..it also happen upon arousal.

Whats wrong i was solitary on my period for 4days im as a rule on for 7days?

I think it is similar to when guys hold an erection.

How do I prepare myself for the big "A"sex?

duh how old r u? as you would expect females nipples get tricky when there cold & when they are aroused. but u wouldn't know anything more or less that lol...now would u?

I havent talk about this ever really?

yeppers, approaching right now mine are ;P

When switching from an influential job to a sit down living, can sitting for long periods product one's bum bigger?

Yes they do. The blood rushes to the area, newly like when the nouns is cold.