An internationally recognized metric regards women having a butt of 49 inches (122.5cm) or more as having a big butt.
Genetics and circulating blood oestrogen play an integral role in determining the default size of a woman’s butt.
Because of higher blood oestrogen levels, generally, women have larger butts than men
There are three muscles making up the left and right glutes, respectively – gluteus maximus (biggest and strongest muscle in the body), gluteus medius, and gluteus minimus.
A layer of gluteofemoral fat overlies the glutes.
The crevice between the butt cheeks is known as the intergluteal cleft or the gluteal cleft.
Colloquially it is called the butt crack.
Reasons for a small or flat buttock include genetics, age, lack of exercise, low oestrogen blood levels, and other factors.
If you are not born with it, squats, lunges, uphill running along with other exercises can increase the size of your glutes. These exercises are most effective in persons who are