I come from a long line of flat butts. On my mother's side of the family, she and her brother, as well as her father, had less-than-full fannies. We often joke about how our backs look more like our fronts. It didn't bother me at all, although it made for baggy jeans and bikini bottoms.
When I started doing more yoga and running, I thought my bum would get bigger, but as you can see from the "before" photo below, my behind was anything but round. It wasn't until I started doing CrossFit a year ago that my booty started to blossom.
While washing dishes recently, my husband lovingly slapped my butt. I looked at him, thinking I had a bug on my pants or something, but he just smiled. "What? Why are you smiling weirdly?" I asked. "You have a butt now," he said. "I do?!" I said excitedly, and I ran to the mirror to look. I couldn't believe it. I said to myself, "I have a butt now!" I wasn't actually one of those girls who was trying to grow her tush, but I do love how strong my legs look and feel.
While we do tons of burpees and air squats (bodyweight squats) in my CrossFit classes, lifting heavy weights is the big change I made. We regularly work on front squats, back squats, overhead squats, snatches, lunges, and thrusters holding a barbell and plates. And even though I don't lift nearly as much as some of the strong-ass women in my class, doing those exercises with 45 to 100 pounds has rounded and firmed up my tush more than Warrior 1 and running hills ever did.
I realize that my butt transformation isn't an incredible difference, but for me, this is huge (no pun intended!). So if growing your glutes is one of your goals, pick up some weights!