Why do breasts droop?

Quite a number of culture that I know said that one of the reasons why breasts droop (not bcos you're old) is because you hold a lot of sex, sexual intimacy. How true is this?
Answers:

No time of year and multiple (-) HPT! What gives?

aging process, pregnancy and gravity are probably the crucial reasons.

Have ever jump the bathroom and seat be left up by your bf or spouse?

rubbish. It have more to do with gravity and childbirth!

Anyone here have breast enlargement until that time?

Gravity! And tearing from sport, bouncing and the approaching... suppose that includes sex?

My period go away for a day..consequently comes back?

It is really not becaus of sexual intimacy!

...maybe because of exceptionally much weight gain during pregnancy and the solidity loss after pregnancy

Why girls don get physical contained by their periods?

gravity

Loestrin 24?

Its gravity. Lots of sex have nothing to do near it. Now lots of pregnancies can have plentifully to do with it.

Are my breasts too big for my age? (36DD 15 year-old)?

That's waffle. The breast is made up of milk gland, milk ducts and fat. There is no muscle or supportive tissue, basically a few ligaments that stretch with time and stretch faster near weight. A C cup will hang down faster than an A cup.
Unless your lover is 'swinging from the chandeliers' it won't make partially the difference one pregnancy will.

Period troubles?

Seems like everyone you know is laughing at you.. Ummm... Okay, Ill be honest. Welcome to the ripe age where on earth the law of gravity is tugging at everything that be once perky.