If you are under the age of about 21, it could mean that your breasts are still growing. If there is a chance that you could be pregnant, it can also be a sign of pregnancy. It can also be a sign that your period is arriving soon.
We don't. They get hard when it's cold or some women get hard nipples when they are aroused. Same reasons some men have it actually.
No, not only mammals have nipples. Nipples are also found in some other animals, such as birds and some reptiles.
Nipple covers provide coverage to protuding nipples. Reasons to use them are discreteness or to add confidence. Women often don't like when the first things men notice are their protruding nipples.
Yes you can some girls like there nipples sucked on some don't you can
some of the neuro toxins in your body send electrode waves down through your body and if they get a-b positive response which is the response for cold they erect nipples and give out a swelling in your nipples and they erect the muscles in your nipple and then sometimes like any other muscle it aches or 'grows' so if you have massive burger nipples then your least likely to have sore nipples as your nipples are maximum size and they are a good muscle sizei am only 15 and i have no idea how i know this sorta stuff
because some people are not capable of having it
Humans typically have two nipples, but variations can occur due to genetic factors, such as supernumerary nipples, which can result in individuals having more than two. In rare cases, some people may have additional nipples or variations depending on their genetic makeup. Animals also exhibit a wide range of nipple counts, often corresponding to the number of offspring they typically bear.
for a variety of reasons... -the salt crystallizes in the bathing suit and becomes sandpapery -the salt water dries out the sensitive skin -sand, salt crystals irritate the skin -and i'm also thinking, you know how when you eat a lot of salt sometimes it stings in your mouth? same thing happens to your nipples. my sister and i have been having this problem :( i was just doing some research on it. pretty much, to solve it, just wear waterproof nipple stickers, or bandaids if your nipples are small enough :)
YES
the best reason is if they are sick or by the accedent
evaluate heart failure
PREGNANCY