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The best tool for a beautiful butt: Plyo box

Beautiful-butt move: Box Jump

Here's why: "A plyo box is a tremendous tool for training the glutes fast," Dixon says. "You not only build great muscle but also get an added cardio benefit that helps trim inches." It's versatile, too—boxes come in a variety of heights and materials, including some with "give" that are easier on your joints. Why the Box Jump? "It's a basic move in that it's simply a squat jump up onto the box and a squat jump down—but there's no quicker way to get results," Dixon explains.

Next: How-to: Box Jump