We love big butts. We cannot lie. But why? Here are the 7 scientific reasons big butts drive us wild. PrettyGoodVideos – Good stuff to know. Sir Mix-a-Lot was onto something. The 7 Biological Characteristics of a Great Butt I. Plumpness. A girthy butt is Crucial for Nurturing a baby. 2. Perkiness; Perky But means youth, Youth means fertility. 3. Spine Angle. 15 degrees is the optimal angle to support pregnancy weight. Fat. A healthy butt has 20-24 percent
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