So if I could own only one pair of workout bottoms--pants or shorts--I'd choose the lululemon athletica Boogie Crop pants. The all-purpose crops, which I wear for power yoga and running (and sometimes just around the house because they're so comfy), are stretchy and chafe resistant. Plus, they wash beautifully. They're a splurge at $84 (you can find them at lululemon athletica in the Short North), but worth every cent.

--Kristy Eckert