Studies say men who prefer large breasts are less financially secure. Studies have also found that when men are hungry they prefer large breasts, and if they want children they also prefer them large. The same study also found that men who prefer small breasts are more financially secure. The small breast enthusiasts are also less likely to want children.

Breast size is not static and can nearly change before your eyes. Yes, we all know that if you gain or lose weight, or become pregnant, your breasts will grow or shrink. But did you know that your breasts can grow by as much as a cup size during PMS? Too bad most of us feel too lousy to enjoy it during that time. Changes in size are mostly in response to fluctuating hormones, but even your diet can have an affect. Too much caffeine or alcohol can actually negatively affect breast health.

Though everyone’s taste buds vary, breast milk is generally considered to have a sweet flavor. Breast milk’s taste is largely influenced by the high amounts of lactose, a sugar that accounts for the majority of the carbohydrates in the milk. The lactose helps with calcium absorption and the metabolism of other important sugars necessary for a baby’s quick growth.

Cigarette smoke chemicals wreak havoc on your breasts. The chemicals in cigarette smoke break down the elastin in our bodies which leads to saggier breasts earlier in life. So, if you want your boobs to stay perky you may want to think twice about lighting up next time!

The largest all natural breasts in the world belong to Annie Hawkins-Turner (aka Norma Stitz) of the USA. They measure 70 inches around, 43 inches under, and would technically be supported in a 48V bra, if they made that size. She suffers from gigantomastia—a slow but steady growth of breast and fat tissue.

Stimulating your partner’s nipples can lead to them feeling more physically attracted and bonded to you. Or at least that’s what a 2012 study suggests! The study aimed to find exactly why men are attracted to breasts, and the answer they found is that it’s a partial result of evolution. In that men have learned that by stimulating a woman’s nipple, the woman is then more inclined to feel attracted and connected to her partner physically. As we’ve learned, some women can achieve orgasm from nipple stimulation alone.

Among primates, only humans have permanent breasts. All other primates only grow full breasts for the purpose of feeding their children. Primates have full breasts only when they’re breastfeeding, and then they quickly decrease in size. But human breasts appear full even when we’re not breastfeeding. So…what gives? There are a bunch of theories, including one that suggests breasts were shaped evolutionarily based on sex appeal and as a sexual feature that allowed potential mates to quickly identify someone as a female.

Sleeping facedown can change the shape of breasts over time. It would take a few years of sleeping facedown, but it would eventually change their shape! This is caused by the excessive pressure placed on the breasts throughout the night causing the skin to stretch. The best sleep move? On your back, so your breasts are pointing upwards

Men have nipples and breasts because all fetuses are female at first. That’s right! Every fetus starts as female, and it isn’t until six weeks that testosterone starts to take hold. But even before that six-week mark, nipples and breasts are already part of the body.

There are eight different classifications of nipples based on size, shape, color, and elasticity. Variety is a great, especially for nipples, the varieties include normal, flat, puffy, 3 different grades of inverted, and unilateral!

The largest breast implants in the world belong to Sheyla Hershey of Houston, TX. Ms. Hershey’s implants put her at an astounding 38KKK. Because the US doesn’t allow that much silicon in a body (thankfully), she had to have the procedure done in her native country, Brazil. While the surgery led to repeated staph infections in both breasts, and the eventual necessary removal of the implants (they were later replaced). Ms. Hershey has since been attempting to increase her implants to MMM.

There is a whole political movement behind women being topless in public, called Topfreedom. There are actually five states where a woman can walk around topless: New York, Hawaii, Texas, Maine, and Ohio (though they might try to pick you up on a public nuisance charge in Texas, unless you’re in Austin).

Many women have one breast slightly (or not so slightly) larger than the other. Uneven? Don’t worry, that’s normal. It is perfectly normal, so don’t fret. Fun fact: For about 65% of women, it happens to be the left breast that is larger.

Breastfeeding can have long-term benefits for moms, including lowering risks of heart disease and cancer. Along with helping new moms lose baby weight, and lowering the chances of postpartum depression. Breastfeeding can actually change the way a mother’s brain works by reinforcing neural pathways that encourage maternal behavior! It makes the mother more attuned to her own child’s crying. Mother Nature is pretty rad!

Some women can reach orgasm just through nipple stimulation alone. In one study published in the Journal of Sexual Medicine, it was found that for some women self-stimulation of the nipples triggered the genital sensory cortex of the brain. Um, yay!