The TRX Suspension System by Fitness Anywhere is a total-body workout that especially targets the core. Originally a Navy Seals training tool, the TRX has two straps that tie to a ceiling or chin-up bar, creating a high-intensity but low-impact workout that recruits your own body weight for resistance. "The TRX is great because it's portable," says fitness trainer Debra Strougo, "You can train anywhere —at home, on the road, in the park." Hot tip: Give it a whirl at a Crunch Fitness Body Web class.

What's your fantasy setting for a workout?

• An exclusive rooftop club in New York or Paris
• A tropical island beach
• A swanky spa nestled in the mountains
• The nearest park on a beautiful day
• The privacy of my own home

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