But the fact is, some breast sag is inevitable. Having a baby, breastfeeding, and racking up more birthdays all contribute to a loss of elasticity of collagen, the connective tissue under the skin—leaving your set more deflated than firm. Sag can also be a matter of genetics. If your mother had a droopy pair, you might be predisposed to one, too (thanks, Mom!).
Here's the thing: Some boob behaviors that seem like they have nothing to do with sag can actually contribute to it—so if you avoid them, your breasts will be better off. And considering that a recent UCLA study found that breast tissue ages two to three years faster than the rest of your body, you might want to quit any habit linked to a flaccid pair—like these.
Although most women avoid breastfeeding in order for their breasts not to sag, breastfeeding is not a direct cause of sagging breasts. The breasts expand during pregnancy; breastfeeding has little or no impact on this.
2. Wearing an Unsupportive Bra
Whether it’s the boulder holder you wear during the day or the sports bra you change into at the gym, not sporting proper support is a big reason for droop. “The more your boobs bounce around, the more stressed breast skin and collagen become,” says Edwards. Stop in a lingerie shop and ask for a fitting just to make sure you’re wearing the right bra for your shape.
4. Exposure to sun
Wearing protective clothing also minimizes the effect of the sun on the breasts.
5. High-Impact Workouts
read up on the details (and keep in mind that exercise helps you keep up a youthful appearance in other ways).