While your butt size is largely determined by genetics, which dictate where you store fat, science provides plenty of reasons to L-O-V-E every inch of whatever your momma gave you, according to Pamela M. Peeke, M.D., a physician and spokesperson for the American College of Sports Medicine. (And if you're on Team Tiny Tush? You can always strengthen your glutes to reap some of the benefits.)

1.It makes you biologically more attractive.

 Some evolutionary psychologists believe that men prefer women with fuller butts because it enhances the appearance of the curvature of the spine, according to a recent study published in Evolution and Human Behavior. From an evolutionary standpoint, this is a Very Desirable Trait: A curved spine can alleviate spinal pressure and related injury during pregnancy, which supports mobility to forage food for yourself until the baby arrives.

2. You're more intuitive than women with smaller butts. 

Studies suggest that women, who are generally more empathetic than men, become especially attuned to people's feelings around the same time they develop curves at puberty. Evolutionary theorists think there could be some connection between emotional intelligence and butt size. Because shapely women who have the largest butts and smallest waists appeal to so many men, they needed to develop superior social skills to assess and select potential mates.

3.  Butt fat is relatively harmless, health-wise. 

Unlike excess white fat in the gut, which surrounds organs and can lead to inflammation, high blood pressure, and disease, big butts are full of subcutaneous yellow fat, which is benign in that area, Dr. Peeke explains.

4. You have a built-in cushion! 

You seriously don't want to fall on a flat butt: Gruesome bruising aside, you could end up with a stress fracture in your sit or pelvic bones, Dr. Peeke says. But a big butt can pad the blow so you can get right back on your feet.

5.Diabetes probably won't mess with you. 

The bigger your waist-to-hip ratio (i.e., the smaller your waist and bigger your hips), the lower your risk of developing type-2 diabetes, according to an International Journal of Obesity study.

6.  It can streamline your silhouette. 

People with small, weak butts often end up tilting their hips forward and sticking the tailbone out, which pushes the belly forward to give you the illusion of a gut. A strong butt can help correct the overextension of your spine so you default to tucking your hips underneath your body and maintain an all-around leaner look.

7. You're less likely to have dangerous cholesterol levels. 

When researchers looked into butt fat (measured by thigh or hip circumference), they linked it to healthier cholesterol levels, which mean a lower risk of chronic illness down the line. Women with bigger butts and smaller waists tend to have higher levels of HDL cholesterol (the good kind that helps keep your arteries clear) and lower levels of LDL cholesterol (the bad kind that blocks arteries).

8. A big butt is like a drug. 

The sight of a large woman's butt activates the reward regions of the male brain that are otherwise activated by drugs, alcohol, and food, according to a study published in PLoS ONE in which researchers monitored brain response to photos of women before and after butt enhancement surgery.

9. Big booties breed smarter kids. 

Butt and thigh fat stores special omega-3 fatty acids. Some scientists believe that when you breastfeed, your body taps those stores to enhance your breast milk. Because babies need this particular kind of fat for brain, nervous system, and eye development, some biologists think that a bigger butt could translate to brighter kids.

10. Big butts promote proper posture. 

Tight hips, an inevitable result of excessive sitting, can make it difficult for you to stand up straight, Dr. Peeke explains. But a strong butt can help lengthen your hip flexors and keep everything in alignment, which alleviates pain (and stops you from looking like a slump).