New York City Fitness

Trainer David Kirsch

"Don't ever let them see you sweat" is the longstanding motto of successful people everywhere. If you work out with fitness trainer David Kirsch at his exclusive Madison Square Club overlooking the namesake park in New York City, no one ever will. With a client roster that reads like a Liz Smith column (fashion model Heidi Klum, Ivana Trump, Goldman Sachs VP Alan Brazil), Kirsch is respectfully tight-lipped, priding himself on "enveloping clients in a totally private, luxurious club that tailors its services to one's individual needs." Single-day and short-term guest memberships are available; workouts are by appointment only, either with Kirsch or one of his nine staff trainers.

The two refreshingly uncluttered fitness rooms are appointed with state-of-the art equipment surrounding large handmade rugs from Marmaris, Turkey. The club is outfitted with four dressing rooms featuring old-world-style cherrywood lockers, hand-carved teak stools, cobalt-colored glass sinks, and limestone steam showers. But the main draw is Kirsch himself, a former Manhattan litigator, who clearly channels his courtroom intensity into motivating fitness clients. Call ahead for a spot in one of his alfresco sessions in the park. If you happen to be Hamptons-bound, try his popular Beach Boot Camp. Kirsch also hosts extravagant wellness trips to such places as Capri, Costa Rica, and Greece. Sessions: $95-$250 an hour. 210 Fifth Avenue, New York, NY 10010; 212-683-1836;