No need to sneak peeks at someone else's trainer to pick up new exercise ideas. Instead, log on to ideafit.com/exercise-library. A site created by the nation's largest association of fitness trainers, it features 30 free one-minute videos that illustrate inventive variations on the usual moves.

Cool tool: The search engine lets you select muscle groups you'd like to target and the equipment you happen to have handy. Figure-eight lunge with kettle bell, anyone?

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